JPWO2006123617A1

JPWO2006123617A1 - Work vice

Info

Publication number: JPWO2006123617A1
Application number: JP2007516280A
Authority: JP
Inventors: 安田　嘉和; 嘉和安田
Original assignee: 株式会社テック・ヤスダ
Priority date: 2005-05-18
Filing date: 2006-05-15
Publication date: 2008-12-25
Anticipated expiration: 2026-05-15
Also published as: CN100581724C; WO2006123617A1; KR20080009098A; CN101180155A; KR100915755B1; JP4680257B2

Abstract

工作機械のテーブルやワークパレットにワークを固定するのに使用するワークバイスに関し、ワーク把持方向の長さが長い生爪を取り付けたときにも、把持力によるワークの浮き上り防止が十分に行われるようにする。ワークを把持したときに口金に下向きの微小移動を生じさせる下動機構を移動台の送り装置の先端部に設ける。好ましくは送り装置を基台内に設けると共に下動機構を移動台の固定口金側端部に設けて、長い生爪を取り付けたときでも移動台の傾動によるワーク把持端の上動量を小さくする。すなわち、上下方向に傾斜した下向き傾斜滑り面３１と上向き傾斜滑り面３２とを当接させた一対の鋸歯状部材８、９を備え、ワーク把持時に前記下向き傾斜滑り面３１と上向き傾斜滑り面３２との間の楔作用により移動口金１６を下方に付勢してワークの浮き上りを防止するワークバイスにおいて、前記一対の鋸歯状部材８、９を移動台４の送り装置の固定口金側端部に設ける。With respect to work vise used to fix the work to the table or work pallet of the machine tool, it is possible to sufficiently prevent the work from being lifted by the gripping force even when a long claw with a long work gripping direction is attached. To. A downward movement mechanism that causes a slight downward movement of the base when the work is gripped is provided at the tip of the feeding device of the moving table. Preferably, the feeding device is provided in the base and the lowering mechanism is provided at the fixed base side end of the moving table so that the amount of upward movement of the work gripping end due to the tilting of the moving table is reduced even when a long raw claw is attached. That is, a pair of saw-tooth members 8 and 9 are provided, which contact a downwardly inclined sliding surface 31 and an upwardly inclined sliding surface 32 that are inclined in the vertical direction, and the downwardly inclined sliding surface 31 and the upwardly inclined sliding surface 32 when gripping a workpiece. In the work vise that urges the moving base 16 downward by the wedge action between the pair of saw-toothed members 8 and 9 to the fixed base side end of the feeding device of the moving base 4. Provided.

Description

この発明は、工作機械のテーブルやワークパレットにワークを固定するのに使用するワークバイスに関するものである。この発明は、特に、固定口金と移動口金で把持されたワークの浮き上りを防止する手段に特徴があるワークバイスに関するものである。 The present invention relates to a work vise used for fixing a work to a table or work pallet of a machine tool. In particular, the present invention relates to a work vise characterized by means for preventing the work held by a fixed base and a moving base from being lifted.

ワークバイスは、固定口金と移動口金との間でワークを把持する。ワークバイスで把持されたワークを正確に加工するためには、ワークの把持位置が正確でなければならない。ワークの把持高さは、ワークの位置を決定する要素の一つである。ワークの上向きの面を加工するときには、ワークの把持高さが正確であることが特に重要である。ワークの把持高さは、ワークバイスに受台を取付け、この受台上にワークを載置した状態で把持することにより、所望高さに設定できる。 The work vise holds the work between the fixed base and the moving base. In order to accurately process the workpiece gripped by the workpiece vise, the gripping position of the workpiece must be accurate. The workpiece gripping height is one of the factors that determine the workpiece position. When machining the upward surface of the workpiece, it is particularly important that the gripping height of the workpiece is accurate. The gripping height of the workpiece can be set to a desired height by attaching a cradle to the work vise and gripping the workpiece in a state where the workpiece is placed on the cradle.

ところが、ワークバイスでワークを把持したときに、ワークが受台から浮き上がることが往々にして起こる。ワークが受台から浮上がると、ワークの把持高さに誤差が生じ、ワークの加工精度が低下する。 However, when the workpiece is gripped by the work vice, it often happens that the workpiece is lifted from the cradle. When the workpiece is lifted from the cradle, an error occurs in the gripping height of the workpiece, and the machining accuracy of the workpiece decreases.

移動口金が装着されている移動台は、基台との間に移動のための遊隙が必要である。この遊隙の存在により、ワークバイスがワークを把持したときに移動台が僅かに傾斜し、ワーク高さに誤差を発生させる。ワークを把持したときの移動台の傾斜は、送り装置から付与される把持力の作用点とワークの把持反力の作用点とに、高さの差があることに起因して生ずる。 The moving table on which the moving base is mounted needs a space for movement between the moving table and the base. Due to the presence of this play, when the work vise grips the work, the moving table is slightly inclined, and an error is generated in the work height. The inclination of the moving table when the workpiece is gripped is caused by the difference in height between the point of action of the gripping force applied from the feeding device and the point of action of the gripping reaction force of the workpiece.

例えば、口金の上端部分で板状のワークを把持するときや、移動台の送り装置（ねじやシリンダ）を基台内に収納したバイスでは、上記作用点の高さの差が大きくなるため、ワークを把持したときに、移動口金を上向きに倒す方向のモーメントが発生する。そして、このモーメントにより、移動口金が上向きに微少角度傾斜して、ワークを受台から浮き上がらせ、ワークの加工高さに誤差を生じさせる。 For example, when gripping a plate-like workpiece at the upper end of the base, or in a vise where the feed device (screw or cylinder) of the moving table is stored in the base, the difference in height of the above action points becomes large. When the workpiece is gripped, a moment is generated in the direction of tilting the moving base upward. Then, due to this moment, the moving base is inclined by a slight angle upward, and the workpiece is lifted from the cradle, causing an error in the machining height of the workpiece.

ワークバイスの口金で把持される部分が曲面となっているワークや、非対称な形状のワークを把持するときは、移動台に生爪（硬度の低い材料でできた口金）を取り付け、生爪の把持面をワークの形状に合せた形状に加工して、ワークを把持している。ワークが、複数の部品で組立てられた組立品であるときは、ワーク形状が複雑になるため、生爪のワーク把持面の形状が複雑になる。更に、ばねの力で滑り移動してワークを把持する滑り移動部（スライド部）を生爪に内蔵させる必要が生ずることもある。このような場合には、生爪のワーク把持方向の寸法（口金を開閉する方向の寸法）が大きくなる。 When gripping a workpiece with a curved surface or an asymmetrical workpiece, attach a raw nail (a base made of a material with low hardness) to the moving base, and grip the surface of the raw nail Is processed into a shape that matches the shape of the workpiece, and the workpiece is gripped. When the work is an assembly made up of a plurality of parts, the work shape is complicated, and thus the shape of the work gripping surface of the raw claw is complicated. Further, it may be necessary to incorporate a sliding movement part (sliding part) that slides and grips a workpiece by the force of a spring in the raw nail. In such a case, the dimension of the raw nail in the workpiece gripping direction (dimension in the direction of opening and closing the base) becomes large.

基台上面に突出する固定顎と移動顎とを備え、移動顎の固定顎を向く面に移動口金を固定する一般的な構造のバイスでは、ワークを把持したときのワークの浮き上りは、移動口金のワーク把持方向の長さが大きくなるほど大きくなる。ワークを把持したときに移動口金が上向きになる角度をθ、ワーク把持方向の移動口金の長さをＬとすると、ワークの浮き上り量は、Ｌtanθとなるからである。 In a vise with a general structure that has a fixed jaw and a movable jaw protruding from the upper surface of the base, and a movable base is fixed to the surface of the movable jaw facing the fixed jaw, the workpiece floating when moving is moved As the length of the base in the workpiece gripping direction increases, the length increases. This is because if the angle at which the moving base is upward when gripping the workpiece is θ and the length of the moving base in the workpiece gripping direction is L, the lift amount of the workpiece is Ltanθ.

このような原因によるワークの浮き上りを防止する手段の一つとして、ワークを把持したときに、ワークを下方に押し下げる方向の分力を発生させる口金を用いることが提案されている。例えば下記特許文献１には、移動顎と移動口金（口金ブロック）との間に台ブロックを介在させ、この台ブロックと移動口金との当接面を上下方向に相対滑り移動が可能な鋸歯状の面とすることにより、ワークを把持したときにワークを下方に押し下げるようにしたワークバイスが提案されている。 As one means for preventing the workpiece from floating due to such a cause, it has been proposed to use a base that generates a component force in a direction of pushing the workpiece downward when the workpiece is gripped. For example, in the following Patent Document 1, a base block is interposed between a moving jaw and a moving base (base block), and a sawtooth shape capable of relative sliding movement in the vertical direction on the contact surface between the base block and the moving base. A work vise in which the workpiece is pushed downward when the workpiece is gripped has been proposed.

この口金は、図６に示すように、移動顎側の台ブロック４２とワーク側の口金ブロック４３とを備えている。台ブロック４２の前面と口金ブロック４３の背面とは、ワークから水平方向の把持反力が加わったときに、口金ブロック４３を斜め下方に滑り移動させる方向の多段の傾斜滑り面（下向き傾斜滑り面４７と上向き傾斜滑り麺５１）と、この傾斜滑り面と交差する多段の当り面４８、５２とを備えた側面視で鋸歯形状の面となっている。台ブロック４２と口金ブロック４３とは、傾斜滑り面４７、５１相互が当接した状態で上下に動けるように、連結ボルト４５で緩く連結されている。口金ブロック４３がワーク６６を把持したとき、その把持力によって傾斜滑り面４７、５１相互が滑り移動して口金ブロック４３が下方に移動し、ワーク６６を受台６７に押しつける。当り面４８、５２の間には、弾性のある緩衝材５３が設けられており、ワークの把持が開放されたときに、口金ブロック４３を上向きに移動させる。
特開平９−２９５７１号公報 As shown in FIG. 6, the base includes a base block 42 on the movable jaw side and a base block 43 on the work side. The front surface of the base block 42 and the back surface of the base block 43 have a multi-step inclined sliding surface (downward inclined sliding surface) in a direction in which the base block 43 slides and moves obliquely downward when a horizontal reaction force is applied from the workpiece. 47 and an upwardly inclined sliding noodle 51) and a multi-step contact surface 48, 52 intersecting with the inclined sliding surface, it is a saw-tooth shaped surface. The base block 42 and the base block 43 are loosely connected by a connecting bolt 45 so that they can move up and down while the inclined sliding surfaces 47 and 51 are in contact with each other. When the base block 43 grips the work 66, the inclined sliding surfaces 47 and 51 slide with each other by the gripping force, and the base block 43 moves downward, pressing the work 66 against the cradle 67. An elastic cushioning material 53 is provided between the contact surfaces 48 and 52, and when the gripping of the workpiece is released, the base block 43 is moved upward.
JP-A-9-29571

生爪でワークを把持する場合、上記特許文献１記載の構造では、多段の傾斜滑り面を設けた台ブロックと口金ブロックを介して生爪を取り付けねばならない。しかしこの構造は、台ブロック及び口金ブロックの厚さだけ、固定口金と移動口金の間隔が狭くなり、把持可能な最大ワーク寸法が短くなるという問題がある。 In the case of gripping a workpiece with a raw nail, in the structure described in Patent Document 1, the raw nail must be attached via a base block and a base block provided with multi-step inclined sliding surfaces. However, this structure has a problem that the distance between the fixed base and the moving base becomes narrow by the thickness of the base block and the base block, and the maximum work size that can be gripped becomes short.

特に、複雑な形状のワークを把持しようとすると、生爪のワーク把持方向の寸法が長くなり、ワークの把持可能長さが更に短くなる。更に、生爪を下向きに動かす位置（傾斜滑り面を設けた位置）とワークの把持位置とが離れ、傾斜滑り面の位置を支点として生爪が上向きに傾斜したときのワークの浮上がり量が大きくなる問題も生じてくる。そのため、上記の従来手段では、ワークの浮き上り防止作用が十分機能しなくなる。 In particular, when a workpiece having a complicated shape is to be gripped, the dimension of the raw claw in the workpiece gripping direction is increased, and the work grippable length is further shortened. Furthermore, the position where the raw claw is moved downward (position where the inclined sliding surface is provided) is separated from the gripping position of the workpiece, and the lift of the workpiece increases when the raw claw is inclined upward with the position of the inclined sliding surface as a fulcrum. Problems also arise. For this reason, the above-described conventional means does not sufficiently function to prevent the workpiece from lifting up.

この発明は、ワークを把持したときに移動口金１６を下向きに微小移動させる部材８、９を、移動台４とこれを移動させる送り装置７、１０との連結部に設けることにより、更に好ましくは、送り装置７、１０を基台１の内部に配置すると共に上記微小移動させる部材８、９を移動台４の固定口金側端部に設けて、長い口金を取り付けたときでも、移動台４の傾動によるワーク把持端のワークの上動量を小さくして、上記の問題を解決したものである。 In the present invention, it is more preferable that the members 8 and 9 for slightly moving the moving base 16 downward when gripping the workpiece are provided at the connecting portion between the moving base 4 and the feeding devices 7 and 10 for moving the moving base 4. Even when a long base is attached by disposing the feeding devices 7 and 10 inside the base 1 and providing the members 8 and 9 for fine movement at the fixed base side end of the mobile base 4, The above-mentioned problem is solved by reducing the amount of upward movement of the workpiece at the workpiece gripping end due to tilting.

この発明に係るワークバイスは、長手方向のガイド３を備えた基台１と、この基台の前記ガイド３に沿って移動可能に装着された移動台４と、当該移動台をガイド３に沿って移動させる送り装置７、１０とを備え、基台１に固定される固定口金３７と移動台４に固定される移動口金１６との間でワークを把持する構造のワークバイスである。 The work vise according to the present invention includes a base 1 provided with a guide 3 in the longitudinal direction, a mobile base 4 mounted so as to be movable along the guide 3 of the base, and the mobile base along the guide 3. This is a work vise having a structure in which a workpiece is gripped between a fixed base 37 fixed to the base 1 and a movable base 16 fixed to the movable base 4.

この発明に係るワークバイスは、更に、前記移動台４側に、下向き傾斜滑り面３１を備えた第１鋸歯状部材８と、当該下向き傾斜滑り面３１に沿って上下方向に滑り移動可能に面接触する上向き傾斜滑り面３２を備えた第２鋸歯状部材９との対を備えており、ワークを把持したときに、前記下向き傾斜滑り面３１と上向き傾斜滑り面３２との間の楔作用により、移動口金１６を下方に押し下げてワークの浮き上りを防止する構造を備えたものである。 The work vise according to the present invention further includes a first sawtooth member 8 having a downward inclined sliding surface 31 on the movable table 4 side, and a surface that can slide in the vertical direction along the downward inclined sliding surface 31. A pair of second serrated members 9 having an upward inclined sliding surface 32 that comes into contact is provided, and when a workpiece is gripped, a wedge action between the downward inclined sliding surface 31 and the upward inclined sliding surface 32 occurs. The moving base 16 is pushed down to have a structure for preventing the workpiece from floating.

この発明のワークバイスは、上記構造を備えたワークバイスにおいて、前記第１鋸歯状部材８と第２鋸歯状部材９との対が、前記送り装置７、１０と移動台４との連結部分の固定口金側端部に設けられていることを特徴とする。 In the work vise of the present invention, in the work vise having the above structure, the pair of the first sawtooth member 8 and the second sawtooth member 9 is a connecting portion between the feeding devices 7 and 10 and the movable table 4. It is provided at the fixed base side end.

移動口金１６を移動台４に固定するための固定面５は、当該移動台４の上面に設けるのが好ましい。この構造により、ワークバイスの全長に対して相対的に長いワークを把持可能なワークバイスが得られる。 The fixed surface 5 for fixing the moving base 16 to the moving table 4 is preferably provided on the upper surface of the moving table 4. With this structure, it is possible to obtain a work vise that can hold a relatively long work with respect to the entire length of the work vise.

この発明のワークバイスの前記送り装置は、基台１に軸支された送りねじ１０と、移動台４に装着されて当該送りねじに螺合する送りナット７とで構成することができる。この場合の好ましい構造は、送りナット７が、移動台４に径方向の遊隙２６を持って装着され、この送りナット７の固定口金側端部に、下向き傾斜滑り面３１を備えたリング状の第１鋸歯状部材８と、上向き傾斜滑り面３２を備えた第２鋸歯状部材９との対が設けられている構造である。 The feeding device of the work vise according to the present invention can be constituted by a feed screw 10 pivotally supported on the base 1 and a feed nut 7 which is mounted on the movable table 4 and screwed into the feed screw. A preferred structure in this case is a ring shape in which the feed nut 7 is mounted on the movable table 4 with a radial clearance 26, and a downwardly inclined sliding surface 31 is provided at the fixed base side end of the feed nut 7. This is a structure in which a pair of the first serrated member 8 and the second serrated member 9 having the upward inclined sliding surface 32 is provided.

この送りねじ１０と送りナット７とで送り装置を構成した場合においても、移動口金の固定面５を移動台４の上面に設けた構造が好ましい。 Even when the feed device is constituted by the feed screw 10 and the feed nut 7, a structure in which the fixed surface 5 of the moving base is provided on the upper surface of the moving table 4 is preferable.

移動口金の固定面５を移動台４の上面に設けた構造のワークバイスにおいては、基台１を断面Ｕ字形の基台とし、このＵ字の断面の内側の部分に送り装置７、１０を配置する構造が好ましい。この場合、前記第１鋸歯状部材８と第２鋸歯状部材９との対は、移動台４の固定口金側端部の下方に配置される。 In a work vise having a structure in which the fixed surface 5 of the moving base is provided on the upper surface of the moving table 4, the base 1 is a U-shaped base, and the feeding devices 7 and 10 are placed on the inner side of the U-shaped cross section. The structure to arrange is preferable. In this case, the pair of the first serrated member 8 and the second serrated member 9 is disposed below the fixed base side end of the movable table 4.

送り装置７、１０を基台１の内側に配置すると、ワークを把持したときの把持力の作用点とワークからの把持反力の作用点との間の高さの差が大きくなるため、このような構造は好まれなかった。しかし、この発明のワークバイスは、後述するように、移動台４の傾斜によるワークの浮き上りを小さくできるので、上記の構造を採用して、長い把持ストロークを備えたワークバイスを得ることができる。 When the feeders 7 and 10 are arranged inside the base 1, the difference in height between the point of action of the gripping force when gripping the workpiece and the point of action of the gripping reaction force from the workpiece increases. Such a structure was not preferred. However, since the work vise of the present invention can reduce the lift of the work due to the inclination of the movable table 4 as will be described later, the work vise having a long gripping stroke can be obtained by adopting the above structure. .

移動口金１６を固定口金３７に向けて進退させる送り装置としては、送りねじ１０とこれに螺合する送りナット７で構成する他、流体シリンダを用いることもできる。この場合には、鋸歯状部材８、９は、シリンダの移動端（例えばロッド端ないしシリンダのヘッドエンド）と移動台４との間に設けられることとなる。 As a feeding device for moving the moving base 16 forward and backward toward the fixed base 37, in addition to the feed screw 10 and the feed nut 7 screwed to the feed screw 10, a fluid cylinder can be used. In this case, the serrated members 8 and 9 are provided between the moving end of the cylinder (for example, the rod end or the cylinder head end) and the moving table 4.

この発明の特に好適な構造は、鋸歯状部材８、９を、移動口金１６のワーク把持端に近接させてその下方（基台側）に配置する構造である。 A particularly preferred structure of the present invention is a structure in which the saw-toothed members 8 and 9 are arranged close to the work gripping end of the moving base 16 and below (the base side).

この発明により、基台長さを一定とした場合に把持可能なワークの最大寸法を小さくすることなく、ワーク把持時におけるワークの浮き上りを防止できる。また、移動台の送り装置を基台内に収容した構造を採用しても、ワーク把持時のワークの浮き上りを防止できるので、送り装置を基台内に収容することにより、ワークの最大把持長さの大きなバイスを得ることが可能になる。すなわちこの発明によれば、ワークの把持反力の作用点と送り装置からの把持力の作用点との間に高さの差があるバイスにおいても、ワークの浮き上りを確実に防止できる。更に、移動口金を下方に押し下げる力をワーク把持位置の直下部分で発生させることが容易に可能となるので、長い生爪を用いるような場合でも、ワークの浮き上りを確実に防止できる。 According to the present invention, it is possible to prevent the workpiece from being lifted when gripping the workpiece without reducing the maximum size of the workpiece that can be gripped when the base length is constant. In addition, even if a structure in which the feeding device of the movable table is accommodated in the base is used, it is possible to prevent the workpiece from lifting when gripping the workpiece, so that the maximum gripping of the workpiece can be achieved by accommodating the feeding device in the base. It becomes possible to obtain a vise with a large length. That is, according to the present invention, it is possible to reliably prevent the workpiece from being lifted even in a vise having a height difference between the point of action of the workpiece gripping reaction force and the point of action of the grip force from the feeder. Furthermore, since it is possible to easily generate a force that pushes the moving base downward at a portion immediately below the workpiece gripping position, it is possible to reliably prevent the workpiece from being lifted even when a long raw claw is used.

この発明のワークバイスの要部断面側面図Cross-sectional side view of main part of work vice of this invention 図１のＡ‐Ａ横断面図AA cross-sectional view of FIG. 鋸歯状リングの鋸歯面を示す正面図Front view showing serrated surface of serrated ring 鋸歯状受け部材の鋸歯面を示す正面図Front view showing the serrated surface of the serrated receiving member 図１の構造を基台両端に備えたバイスの上面図Top view of a vise equipped with the structure of FIG. 1 at both ends of the base 台ブロックと口金ブロックの当り面を鋸歯状とした従来構造を示すの側面図Side view of a conventional structure with a sawtooth contact surface between the base block and the base block

Explanation of symbols

１基台
４移動台
７送りナット
８鋸歯状リング
９鋸歯受
10 送りねじ
16 生爪
26 遊隙
31 下向き傾斜滑り面
32 上向き傾斜滑り面1 base 4 moving base 7 feed nut 8 sawtooth ring 9 sawtooth receiver
10 Lead screw
16 Raw nails
26 Space
31 Downward inclined sliding surface
32 Inclined sliding surface

以下、図面を参照してこの発明の実施形態を説明する。図１は要部の断面側面図、図２は図１のＡ‐Ａ部における横断面図、図３は鋸歯状リングの鋸歯面の正面図、図４は移動台の鋸歯状受面の正面図、図５は図１の構造を基台両端に備えたバイスの上面図である。 Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional side view of the main part, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a front view of the sawtooth surface of the sawtooth ring, and FIG. FIG. 5 is a top view of a vise provided with the structure of FIG. 1 at both ends of the base.

図中、１は基台、２は基台１の長手中央に固定して設けた中間軸受、３は断面Ｕ字形の基台１のＵ字の内側両側面に長手方向に設けたガイド溝、４はガイド溝３に案内されて基台１の長手方向に滑り移動する移動台、５は移動台上面の口金固定面、６は移動台４に形成されたナット孔、７はナット孔６に収容された送りナット、８は送りナット７の先端に軸方向移動自在かつ移動台４に相対回動不能にして装着した鋸歯状リング、９は移動台４に固定的に設けた鋸歯状受け部材、１０は送りナット７に螺合している送りねじ、１１は送りねじ１０を軸方向に付勢しているセンタリングばね、１２及び１３は送りナット７をナット孔６から若干浮き上がった状態で保持しているＯリング、１４は送りナット７の移動台４に対する相対回動と軸方向の相対移動の両方を緩く規制している止めねじ、１５は送りナット７の移動台４に対する軸方向の相対移動を緩く規制している補助止めねじ、想像線で示す１６は移動台４の上面に取り付けた生爪（移動口金、把持爪）である。 In the figure, 1 is a base, 2 is an intermediate bearing fixedly provided at the longitudinal center of the base 1, 3 is a guide groove provided in the longitudinal direction on both inner sides of the U-shape of the base 1 having a U-shaped cross section, 4 is a moving table that is guided by the guide groove 3 and slides in the longitudinal direction of the base 1, 5 is a base fixing surface on the upper surface of the moving table, 6 is a nut hole formed in the moving table 4, and 7 is a nut hole 6. An accommodation feed nut, 8 is a saw-tooth ring mounted on the tip of the feed nut 7 so as to be axially movable and not rotatable relative to the movable table 4, and 9 is a saw-tooth receiving member fixedly provided on the movable table 4. Reference numeral 10 denotes a feed screw that is screwed to the feed nut 7, 11 denotes a centering spring that urges the feed screw 10 in the axial direction, and 12 and 13 hold the feed nut 7 in a state of being slightly lifted from the nut hole 6. The O-ring 14 is the relative rotation of the feed nut 7 relative to the moving base 4 and the axial direction. A set screw 15 that loosely regulates both of the relative movement of the feed nut 7, an auxiliary set screw 15 that loosely regulates the relative movement of the feed nut 7 relative to the moving table 4, and 16 indicated by an imaginary line is the upper surface of the moving table 4 It is a raw nail (moving mouthpiece, gripping nail) attached to.

基台１は、断面がＵ字形で平面が細長い矩形の部材で、その両端には送りねじ１０を軸支する端部材１７が固定されている。端部材１７の軸受部には、ダストシール１８及び軸受メタル１９が嵌挿されており、その内側面にはばね受け２０が設けられている。 The base 1 is a rectangular member having a U-shaped cross section and an elongated flat surface, and end members 17 that support the feed screw 10 are fixed to both ends thereof. A dust seal 18 and a bearing metal 19 are fitted into the bearing portion of the end member 17, and a spring receiver 20 is provided on the inner surface thereof.

移動台４は、両側壁に設けたガイド鍔２１を基台のガイド溝３に滑り移動自在に嵌合させた状態で、基台１のＵ字断面内で滑り移動するように装着されている。移動台４の幅方向の位置は、ガイド鍔２１より上方の移動台の側面４ａが基台１の内側側面と滑り移動可能に接することによって規定されている。 The movable table 4 is mounted so as to slide in the U-shaped cross section of the base 1 with the guide rods 21 provided on both side walls fitted in the guide grooves 3 of the base so as to be slidable. . The position in the width direction of the moving table 4 is defined by the side surface 4a of the moving table above the guide rod 21 slidably contacting the inner side surface of the base 1.

移動台４の上面は、生爪を固定する口金固定面５とされ、この口金固定面５には、バイス長手方向に一定の間隔で長手直角方向の２本のキー溝２２が設けられている。キー溝２２は、キー溝内への切粉などの進入を防ぐために両端が半円状に閉じた形状となっている。キー溝２２の一方の端には、キー溝２２の深さよりも深いノックピンを差込むための孔２３が設けられている。各キー溝２２の端部両側には、キー溝２２の配設間隔の２分の１の距離を隔てた位置に、口金固定用のねじ孔２４が設けられている。 The upper surface of the movable table 4 is a base fixing surface 5 for fixing the raw claws, and the base fixing surface 5 is provided with two key grooves 22 in the direction perpendicular to the longitudinal direction at regular intervals in the longitudinal direction of the vice. The key groove 22 has a shape in which both ends are closed in a semicircular shape in order to prevent chips and the like from entering the key groove. A hole 23 for inserting a knock pin deeper than the depth of the key groove 22 is provided at one end of the key groove 22. On both sides of the end portion of each key groove 22, screw holes 24 for fixing the base are provided at positions separated by a distance of a half of the arrangement interval of the key grooves 22.

図１に想像線で示した生爪１６は、キー溝２２に挿入したキーで位置決めされて、更に要すればピン孔２３に差込んだノックピンで位置決めされて、ねじ孔２４に螺合されたボルト３８で、ワーク把持部２５を移動台４の先端（固定口金側）に略一致させた状態で、口金固定面５に固定されている。 The raw claw 16 shown by the imaginary line in FIG. 1 is positioned by a key inserted into the key groove 22 and further positioned by a knock pin inserted into the pin hole 23 and screwed into the screw hole 24 if necessary. In FIG. 38, the workpiece gripping portion 25 is fixed to the base fixing surface 5 in a state where the workpiece gripping portion 25 is substantially aligned with the tip (fixed base side) of the movable table 4.

基台１の長手方向中央には、中間軸受２が、基台１のＵ字形の凹所内に嵌め込まれた状態で、両側面をボルト３３で固定して装着されている。この中間軸受２は、送りねじ１０の中間部を回動自在かつ軸方向移動自在に軸支している。基台１の長手方向中央上面には、固定口金３７を固定するためのねじ孔４０が設けられており、想像線で示す固定口金３７が、ボルト３９で固定されている。図に示すワークバイスは、固定口金３７の両側に移動台４を設けた例であり、固定口金３７の中心に対して長手方向両側が対称な構造となっている。 At the center in the longitudinal direction of the base 1, the intermediate bearing 2 is mounted with both side surfaces fixed with bolts 33 in a state of being fitted in a U-shaped recess of the base 1. The intermediate bearing 2 supports an intermediate portion of the feed screw 10 so as to be rotatable and axially movable. A screw hole 40 for fixing the fixed base 37 is provided on the upper surface in the longitudinal direction of the base 1, and the fixed base 37 indicated by an imaginary line is fixed by a bolt 39. The work vise shown in the figure is an example in which the movable base 4 is provided on both sides of the fixed base 37, and has a structure in which both longitudinal sides are symmetrical with respect to the center of the fixed base 37.

図に示したワークバイスは、送りねじ１０を回転させたときに、固定口金３７の両側に配置した移動台４が同時に移動して、それらに取り付けた生爪１６が固定側の生爪との間で２個のワークを同時に把持する構造である。図１には、両側の移動台の送り装置のうちの一方のみが示されている。 In the work vise shown in the figure, when the feed screw 10 is rotated, the movable bases 4 arranged on both sides of the fixed base 37 move simultaneously, and the raw claws 16 attached to them move between the raw claws 16 on the fixed side. The structure grips two workpieces simultaneously. In FIG. 1, only one of the feeding devices of the moving tables on both sides is shown.

送りねじ１０は、基台１を長手方向に貫通して、基台の両端に設けた端部材１７で回転自在かつ軸方向移動自在に軸支されている。送りねじ１０には、長手方向両側に互いに逆方向のねじが設けられており、中間軸受２の両側に設けた移動台４のナット孔６に収容された送りナット７がそれぞれのねじに螺合している。 The feed screw 10 passes through the base 1 in the longitudinal direction, and is supported by end members 17 provided at both ends of the base so as to be rotatable and axially movable. The feed screw 10 is provided with screws in opposite directions on both sides in the longitudinal direction, and feed nuts 7 accommodated in the nut holes 6 of the moving table 4 provided on both sides of the intermediate bearing 2 are screwed into the respective screws. is doing.

送りナット７は、円筒形で、移動台のナット孔６に遊隙２６を有する状態で嵌め込まれ、その外周に設けたＯリング１２、１３がナット孔６の内面と滑り移動可能に接している。送りナット７の外周には、円周を８等分する位置に設けた位置決め孔２７と、円周溝２８とが形成されている。位置決め孔２７の１つには、移動台４に螺合した止めねじ１４の先端ピンが挿入されて、送りナット７の回転方向の位置を緩く規定している。円周溝２８には、移動台４に螺合した補助止めねじ１５の先端ピンが挿入されている。円周溝２８の幅及び位置決め孔２７の径は、補助止めねじ及び止めねじの先端ピンの径より若干大きい。従って、送りナット７は、移動台４に対して軸方向及び回転方向に若干移動及び回動が可能である。 The feed nut 7 is cylindrical and is fitted in the nut hole 6 of the moving table with a clearance 26, and O-rings 12 and 13 provided on the outer periphery thereof are in contact with the inner surface of the nut hole 6 so as to be slidable. . On the outer periphery of the feed nut 7, a positioning hole 27 provided at a position for dividing the circumference into eight equal parts and a circumferential groove 28 are formed. One of the positioning holes 27 is inserted with a tip pin of a set screw 14 screwed into the movable table 4 to loosely define the position of the feed nut 7 in the rotational direction. In the circumferential groove 28, a tip pin of the auxiliary set screw 15 screwed into the movable table 4 is inserted. The width of the circumferential groove 28 and the diameter of the positioning hole 27 are slightly larger than the diameters of the auxiliary set screw and the tip pin of the set screw. Therefore, the feed nut 7 can be moved and rotated slightly in the axial direction and the rotational direction with respect to the movable table 4.

補助止めねじ１５の先端ピンを円周溝２８に挿入した状態で、止めねじ１４を緩めてその先端ピンを位置決め孔２７から抜き、送りナット７を回動して新たな位置決め孔に止めねじ１４の先端ピンを嵌合することにより、送りナット７と送りねじ１０との螺合位置をねじピッチの８分の１の単位で調整できる。 With the tip pin of the auxiliary set screw 15 inserted into the circumferential groove 28, the set screw 14 is loosened, the tip pin is removed from the positioning hole 27, the feed nut 7 is rotated, and the set screw 14 is inserted into the new positioning hole. By fitting the front end pin, the screwing position of the feed nut 7 and the feed screw 10 can be adjusted by a unit of 1/8 of the screw pitch.

送りナット７の基台長手方向の外側内周には、センタリングばね１１の外周を案内するばねガイド２９が形成されている。このばねガイド２９に外周を案内されて、端部材１７と送りねじ１０の段部１０ａとの間に装着されたセンタリングばね１１は、送りねじ１０を基台中央に向けて付勢している。 A spring guide 29 for guiding the outer periphery of the centering spring 11 is formed on the outer inner periphery of the feed nut 7 in the base longitudinal direction. The centering spring 11, which is guided by the spring guide 29 on the outer periphery and is mounted between the end member 17 and the stepped portion 10 a of the feed screw 10, biases the feed screw 10 toward the center of the base.

鋸歯状受け部材９は、移動台４と実質上一体のリング状の部材である。鋸歯状リング８は、キーの役目をしている止めねじ３０で移動台４に対して相対回動不能かつ軸方向移動可能にして、かつナット孔６の内周との間に遊隙２６を有する状態で、送りナット７と鋸歯状受け部材９との間に挿入されている。 The sawtooth receiving member 9 is a ring-shaped member that is substantially integrated with the movable table 4. The serrated ring 8 is configured such that a set screw 30 serving as a key cannot rotate relative to the moving base 4 and can move in the axial direction, and a clearance 26 is formed between the inner periphery of the nut hole 6. In such a state, it is inserted between the feed nut 7 and the sawtooth receiving member 9.

鋸歯状リング８の前面（固定口金側を向く面）と鋸歯状受け部材９の背面とは、両者の間に締結力が作用したときに、鋸歯状受け部材９を斜め下方に滑り移動させる方向の多段の傾斜滑り面（押し下げる面３１及び押し下げられる面３２）と、この傾斜滑り面と交差する多段の当接面３４及び３５とを備えた側面視で鋸歯状の面となっている。 The front surface of the serrated ring 8 (the surface facing the fixed base side) and the rear surface of the serrated receiving member 9 are directions in which the serrated receiving member 9 slides obliquely downward when a fastening force acts between them. A multi-step inclined sliding surface (a pressing surface 31 and a pressed surface 32) and a multi-step contact surface 34 and 35 intersecting with the inclined sliding surface are saw-toothed surfaces.

送りナット７が送りねじ１０でワーク把持方向に押され、送りナット７によって同じ方向に押された鋸歯状リング８が鋸歯状受け部材９を押し動かしている状態で、移動台に固定した生爪１６がワークを把持すると、その把持力が傾斜滑り面３１、３２の間に作用し、鋸歯状リングの傾斜滑り面３１が鋸歯状受け部材の傾斜滑り面３２を楔作用により下方に押し下げる。この作用により、移動台４の前端部、すなわち移動台に装着された生爪１６のワーク把持端が下方に引き込まれ、ワークの浮き上りが防止される。 In the state where the feed nut 7 is pushed in the workpiece gripping direction by the feed screw 10 and the saw-toothed ring 8 pushed in the same direction by the feed nut 7 pushes and moves the saw-tooth receiving member 9, the raw claw 16 fixed to the moving table 16. When the workpiece is gripped, the gripping force acts between the inclined sliding surfaces 31, 32, and the inclined sliding surface 31 of the serrated ring pushes the inclined sliding surface 32 of the serrated receiving member downward by the wedge action. With this action, the front end portion of the movable table 4, that is, the workpiece gripping end of the raw claw 16 mounted on the movable table is drawn downward, and the workpiece is prevented from being lifted.

ワークの把持力が解除されると、移動台４の下方への押下げ力が開放され、Ｏリング１２、１３の弾力により、送りナット７とこれに嵌合された鋸歯状リング８とが僅かに下方に動いて把持前の状態に戻る。 When the gripping force of the workpiece is released, the downward pressing force of the movable table 4 is released, and the elastic force of the O-rings 12 and 13 slightly causes the feed nut 7 and the saw-toothed ring 8 fitted thereto to slightly. It moves downward to return to the state before gripping.

すなわち、この発明の構造では、移動台４の送り装置に設けた鋸歯状リング８と鋸歯状受け部材９との当り面に存在する斜めの押し下げる面３１と押し下げられる面３２との楔作用により、ワークを把持する力が作用したときに、移動台４が下方に引かれ、これによって移動台４に装着された爪１６が下方に引かれて、ワークの浮き上りを防止している。すなわち、把持爪１６を下方に付勢する部材８、９が移動台の下方に設けられているので、当該部材８、９を設けることによって、ワークの最大把持長さが短くなるということがない。 That is, in the structure of the present invention, due to the wedge action between the obliquely depressed surface 31 and the depressed surface 32 existing on the contact surface between the sawtooth ring 8 and the sawtooth receiving member 9 provided in the feeding device of the movable table 4, When a force for gripping the workpiece is applied, the movable table 4 is pulled downward, whereby the claw 16 attached to the movable table 4 is pulled downward to prevent the workpiece from being lifted. That is, since the members 8 and 9 for urging the gripping claws 16 downward are provided below the movable table, the maximum gripping length of the workpiece is not shortened by providing the members 8 and 9. .

更に、鋸歯状リング８と鋸歯状受け部材９とからなる下方への押下げ部材を、移動台４に取り付けた把持爪１６のワーク把持端の直下部分に設けることにより、ワーク把持時における下方への付勢力がそのままワーク把持部に伝達され、従って、ワーク把持方向の長さの長い把持爪を用いたときでも、ワークの浮き上りを確実に防止できる。 Further, a downward pressing member composed of the serrated ring 8 and the serrated receiving member 9 is provided immediately below the workpiece gripping end of the gripping claw 16 attached to the movable table 4, thereby lowering the workpiece when gripping the workpiece. The urging force of the workpiece is transmitted to the workpiece gripping portion as it is. Therefore, even when a gripping claw having a long length in the workpiece gripping direction is used, it is possible to reliably prevent the workpiece from being lifted.

センタリングばね１１は、基台１の両端部に設けられて、それぞれの側で送りねじ１０を基台中央に向けて付勢している。この一対のばねのセンタリング作用により、基台１の長手方向を縦方向にして取り付けても、重力で送りねじ１０や移動台４が落下するのを防止できる。一方、固定口金の両側で把持するワークに寸法差があるときは、送りねじ１０は、センタリングばね１１のばね力に抗して、その寸法差に相当する量だけ軸方向に移動して、２個のワークを同時に把持する。 The centering springs 11 are provided at both ends of the base 1 and urge the feed screw 10 toward the center of the base on each side. Due to the centering action of the pair of springs, it is possible to prevent the feed screw 10 and the movable table 4 from dropping due to gravity even when the base 1 is attached with the longitudinal direction set to the vertical direction. On the other hand, when there is a dimensional difference between the workpieces gripped on both sides of the fixed base, the feed screw 10 moves in the axial direction by an amount corresponding to the dimensional difference against the spring force of the centering spring 11. Grasp a single workpiece at the same time.

なお、図１に想像線で示すように、中間軸受２の上端と移動台４の中間軸受側端部の上辺との間、及び、端部材１７の上辺と移動台４の反中間軸受側端部の上辺との間には、滑り伸縮型のダストカバー３６が装着されて、基台の凹所内に切屑等が落下するのを防止している。 In addition, as shown by an imaginary line in FIG. 1, between the upper end of the intermediate bearing 2 and the upper side of the intermediate bearing side end of the moving table 4, and the upper side of the end member 17 and the anti-intermediate bearing side end of the moving table 4 Between the upper side of the part, a sliding expansion / contraction type dust cover 36 is mounted to prevent chips and the like from falling into the recess of the base.

以上のように、この発明のワークバイスは、把持可能な最大ワーク寸法を低下させることなく、ワーク把持時におけるワークの浮き上りを防止することができ、かつ、ワーク把持時に把持爪を下方へ引き込む力を口金のワークの把持部に近い位置で作用させることができるので、ワークの浮き上りをより確実に防止することができる。 As described above, the work vise of the present invention can prevent the workpiece from floating when gripping the workpiece without reducing the maximum workpiece size that can be gripped, and pulls the gripping claw downward when gripping the workpiece. Since the force can be applied at a position close to the grip portion of the work piece of the base, it is possible to more reliably prevent the work from being lifted.

【０００４】
可能に面接触する上向き傾斜滑り面３２を備えた第２鋸歯状部材９との対を備えており、ワークを把持したときに、前記下向き傾斜滑り面３１と上向き傾斜滑り面３２との間の楔作用により、移動口金１６を下方に押し下げてワークの浮き上りを防止する構造を備えたものである。
［００１５］
この発明のワークバイスは、上記構造を備えたワークバイスにおいて、前記第１鋸歯状部材８と第２鋸歯状部材９との対が、前記送り装置７、１０と移動台４との連結部分の固定口金側端部に設けられている。
［００１６］
［００１７］
この発明のワークバイスの前記送り装置は、基台１に軸支された送りねじ１０と、移動台４に装着されて当該送りねじに螺合する送りナット７とで構成されている。送りナット７は、移動台４に径方向の遊隙２６を持って装着され、この送りナットの固定口金側端部に、下向き傾斜滑り面３１を備えたリング状の第１鋸歯状部材８と、上向き傾斜滑り面３２を備えた第２鋸歯状部材９との対が設けられている。
［００１８］
移動口金１６を移動台４に固定するための固定面５は、当該移動台４の上面に設けるのが好ましい。この構造により、ワークバイスの全長に対して相対的に長いワークを把持可能なワークバイスが得られる。
［００１９］
移動口金の固定面５を移動台４の上面に設けた構造のワークバイスにおいては、基台１を断面Ｕ字形の基台とし、このＵ字の断面の内側の部分に送り装置７、１０を配置する構造が好ましい。この場合、前記第１鋸歯状部材８と第２鋸歯状部材９との対は、移動台４の固定口金側端部の下方に配置される。
［００２０］
送り装置７、１０を基台１の内側に配置すると、ワークを把持したときの把持力の作用点とワークからの把持反力の作用点との間の高さの差が大きくなるため、このような構造は好まれなかった。しかし、この発明のワークバイスは、後述するように、移動台４の傾斜によるワークの浮き上りを小さくできるので、上記の構造を採用して、長い把持ストロークを備えたワークバイスを得ることができる。
［００２１］
移動口金１６を固定口金３７に向けて進退させる送り装置としては、送りねじ１０とこ[0004]
A pair of second serrated members 9 having an upward inclined sliding surface 32 in surface contact with each other is provided, and when the workpiece is gripped, a gap between the downward inclined sliding surface 31 and the upward inclined sliding surface 32 is provided. The structure is provided with a structure that prevents the workpiece from being lifted by pushing down the moving base 16 downward by the wedge action.
[0015]
In the work vise of the present invention, in the work vise having the above structure, the pair of the first sawtooth member 8 and the second sawtooth member 9 is a connecting portion between the feeding devices 7 and 10 and the movable table 4. It is provided at the fixed base side end.
[0016]
[0017]
The feeding device for a work vise according to the present invention comprises a feed screw 10 that is pivotally supported on a base 1 and a feed nut 7 that is mounted on a moving base 4 and screwed into the feed screw. The feed nut 7 is mounted on the movable table 4 with a radial play 26, and a ring-shaped first sawtooth member 8 provided with a downwardly inclined sliding surface 31 at a fixed base side end of the feed nut; A pair with the second serrated member 9 having an upward inclined sliding surface 32 is provided.
[0018]
The fixed surface 5 for fixing the moving base 16 to the moving table 4 is preferably provided on the upper surface of the moving table 4. With this structure, it is possible to obtain a work vise capable of gripping a relatively long work with respect to the entire length of the work vise.
[0019]
In a work vise having a structure in which the fixed surface 5 of the moving base is provided on the upper surface of the moving table 4, the base 1 is a U-shaped base, and the feeding devices 7 and 10 are placed on the inner side of the U-shaped cross section. The structure to arrange is preferable. In this case, the pair of the first serrated member 8 and the second serrated member 9 is disposed below the fixed base side end of the movable table 4.
[0020]
When the feeders 7 and 10 are arranged inside the base 1, the difference in height between the point of action of the gripping force when gripping the workpiece and the point of action of the gripping reaction force from the workpiece increases. Such a structure was not preferred. However, since the work vise of the present invention can reduce the lift of the work due to the inclination of the movable table 4 as will be described later, the work vise having a long gripping stroke can be obtained by adopting the above structure. .
[0021]
As a feed device for moving the moving base 16 forward and backward toward the fixed base 37, the feed screw 10 and the like are used.

【０００５】
れに螺合する送りナット７で構成する他、流体シリンダを用いることもできる。この場合には、鋸歯状部材８、９は、シリンダの移動端（例えばロッド端ないしシリンダのヘッドエンド）と移動台４との間に設けられることとなる。
［００２２］
この発明の特に好適な構造は、鋸歯状部材８、９を、移動口金１６のワーク把持端に近接させてその下方（基台側）に配置する構造である。
［発明の効果］
［００２３］
この発明により、基台長さを一定とした場合に把持可能なワークの最大寸法を小さくすることなく、ワーク把持時におけるワークの浮き上りを防止できる。また、移動台の送り装置を基台内に収容した構造を採用しても、ワーク把持時のワークの浮き上りを防止できるので、送り装置を基台内に収容することにより、ワークの最大把持長さの大きなバイスを得ることが可能になる。すなわちこの発明によれば、ワークの把持反力の作用点と送り装置からの把持力の作用点との間に高さの差があるバイスにおいても、ワークの浮き上りを確実に防止できる。更に、移動口金を下方に押し下げる力をワーク把持位置の直下部分で発生させることが容易に可能となるので、長い生爪を用いるような場合でも、ワークの浮き上りを確実に防止できる。
［図面の簡単な説明］
［００２４］
［図１］
この発明のワークバイスの要部断面側面図
［図２］
図１のＡ−Ａ横断面図
［図３］
鋸歯状リングの鋸歯面を示す正面図
［図４］
鋸歯状受け部材の鋸歯面を示す正面図
［図５］
図１の構造を基台両端に備えたバイスの上面図
［図６］
台ブロックと口金ブロックの当り面を鋸歯状とした従来構造を示す側面図
［符号の説明］
［００２５］
１基台
４移動台
７送りナット
８鋸歯状リング
９鋸歯受[0005]
In addition to the feed nut 7 screwed onto the fluid, a fluid cylinder can also be used. In this case, the serrated members 8 and 9 are provided between the moving end of the cylinder (for example, the rod end or the cylinder head end) and the moving table 4.
[0022]
A particularly preferred structure of the present invention is a structure in which the saw-toothed members 8 and 9 are arranged close to the work gripping end of the moving base 16 and below (the base side).
[The invention's effect]
[0023]
According to the present invention, it is possible to prevent the workpiece from being lifted when gripping the workpiece without reducing the maximum size of the workpiece that can be gripped when the base length is constant. In addition, even if a structure in which the feeding device of the movable table is accommodated in the base is used, it is possible to prevent the workpiece from lifting when gripping the workpiece, so that the maximum gripping of the workpiece can be achieved by accommodating the feeding device in the base. It becomes possible to obtain a vise with a large length. That is, according to the present invention, it is possible to reliably prevent the workpiece from being lifted even in a vise having a height difference between the point of action of the workpiece gripping reaction force and the point of action of the grip force from the feeder. Furthermore, since it is possible to easily generate a force that pushes the moving base downward at a portion immediately below the workpiece gripping position, it is possible to reliably prevent the workpiece from being lifted even when a long raw claw is used.
[Brief description of drawings]
[0024]
[Figure 1]
Cross-sectional side view of the main part of the work vice of the present invention [FIG. 2]
AA cross-sectional view of FIG. 1 [FIG. 3]
Front view showing the serrated surface of the serrated ring [Fig. 4]
Front view showing the serrated surface of the serrated receiving member [FIG. 5]
Top view of a vise equipped with the structure of FIG. 1 at both ends of the base [FIG. 6]
Side view showing a conventional structure in which the contact surface of the base block and the base block has a sawtooth shape [description of symbols]
[0025]
1 base 4 moving base 7 feed nut 8 sawtooth ring 9 sawtooth receiver

Claims

A fixed base that is provided with a moving base 4 movably provided along a guide 3 provided on the base 1 and feeding devices 7 and 10 for moving the moving base along the guide. 37 and a work vise for gripping a work between the movable base 16 fixed to the movable table 4,
A second sawtooth member 8 having a downwardly inclined sliding surface 31 and an upwardly inclined sliding surface 32 which is in surface contact with the downwardly inclined sliding surface so as to be slidable in the vertical direction are provided on the moving table side. A pair with serrated members 9;
In a work vise that prevents the workpiece from being lifted by pushing down the moving base 16 by a wedge action between the downward inclined sliding surface 31 and the upward inclined sliding surface 32 when gripping the workpiece,
A work vise characterized in that a pair of the first serrated member 8 and the second serrated member 9 is provided at a fixed base side end portion of a connecting portion between the feeding device and the moving table.

The work vise according to claim 1, wherein the moving table includes a fixed surface 5 of a moving base 16 on an upper surface thereof.

In the work vise in which the feed device includes a feed screw 10 pivotally supported by the base and a feed nut 7 that is mounted on the moving base and screwed into the feed screw, the feed nut 7 is moved. A ring-shaped first sawtooth shape that is mounted on the base 4 with a radial clearance 26 and that has the downward inclined sliding surface and the upward inclined sliding surface at the fixed base side end of the feed nut. The work vise according to claim 1, wherein a pair of a member (8) and a second serrated member (9) is provided.

The work vise according to claim 3, wherein the moving table includes a fixed surface 5 of a moving base 16 on an upper surface thereof.

A base 1 having a U-shaped cross section is provided, feeding devices 7 and 10 are arranged inside the U-shape of the base, and the pair of the first sawtooth member 8 and the second sawtooth member 9 is the moving base 4. The work vise according to claim 2, wherein the work vise is arranged below the fixed base side end.

A base 1 having a U-shaped cross section is provided, feeding devices 7 and 10 are arranged inside the U-shape of the base, and the pair of the first sawtooth member 8 and the second sawtooth member 9 is the moving base 4. The work vise according to claim 4, wherein the work vise is disposed at a lower portion of the fixed base side end portion.