JP2009119557A - Clamping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clamping device of superior work efficiency, by moving a pressing member between a stand-by position and a pressing position, while interlocked with a turning operation of a screw member. <P>SOLUTION: This clamping device 3 is provided with a body member 4 attachment-fixed to a fixed base 1 provided with a female screw 7, the pressing member 5 for pressing a work 2, and the screw member 6 having a male screw part 8 screwed in with the female screw part 7. A direction of an axis 9 in the screwing of the female screw part 7 and the male screw part 8 is same to a direction connecting the pressing position for pressing the work 2 by the pressing member 5, and a release position for releasing the pressing. A guide part 21 is provided in the body member 4, to guide the moving, of the pressing member 5, between the stand-by position not faced with the work 2 and the pressing position, by the turning of the screw member 6, and the pressing member 5 is provided with a guided part 22 guided relatively by the guide part 21. A direction connecting the release position to the stand-by position is directed to an inclined direction inclined to be separated from the work 2 and the fixed base 1 along toward a stand-by position side, with respect to the direction of the axis 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a clamp device for fixing an object to be fixed such as a workpiece to a fixture base or a fixed base such as a machine table.

  Conventionally, for example, as a device for fixing a workpiece as a fixed object to a fixed base, there has been a clamp device shown in FIG. 12 (see, for example, Non-Patent Document 1). The clamp device 51 includes a pressing member 53 that fixes the workpiece 52 so as to press it, a screw member 54 that is screwed into a screw hole 60 a provided in the fixing base 60 such as a fixture base, and a high height to the fixing base 60. And a support member 55 that is attached so as to be adjustable. Here, the pressing member 53 is provided with a long hole 53a through which the shaft portion 54a of the screw member 54 passes at a position closer to the tip side than the center portion. By sliding in the direction, it is possible to move between a facing position where the tip faces the work 52 and a standby position where the work 52 does not face. Then, by tightening the screw member 54 in a state where the pressing member 53 is in the facing position, the pressing member 53 is supported by the support member 55 at the base end side and presses the workpiece 52 at the distal end side. Thus, the work 52 is fixed to the fixed base 60.

“Standard Jig 2006”, Imao Corporation, August 2006, p. 246

  By the way, in the said conventional clamping apparatus, the movement between the said facing position of the pressing member 53 and the said standby position is performed by moving the pressing member 53 one by one using a hand, and workability | operativity is improved. It was bad. The present invention has been made to solve the above-described conventional drawbacks, and an object of the present invention is to provide a clamping device having excellent workability.

  In order to achieve the above object, the clamping device according to the present invention has the following configuration. In other words, the clamp device according to the first aspect of the present invention is a clamp device for fixing an object to be fixed to a fixed base, and a body member that is detachably attached to the fixed base, and the fixed object. A pressing member that fixes an object by pressing it and a screw member are provided. Here, a first screw portion is provided on the main body member or the fixed base. Moreover, the said pressing member has a press part which presses the said to-be-fixed object. The screw member has a second screw portion that is screwed with the first screw portion. The direction of the axial center in the screwing of the first screw part and the second screw part is a pressing position where the pressing member presses the fixed object in a state where the pressing part faces the fixed object. The direction is the same as the direction connecting the release position where the pressure is released. Therefore, the screw member rotates in one direction, and moves in the first direction facing the direction from the release position in the axial direction toward the pressing position with respect to the first screw portion. Further, by rotating in the other direction, the first screw portion moves in the second direction facing the direction from the pressing position in the axial direction toward the release position. The pressing member is movable from the standby position where the pressing portion does not face the object to be fixed to the pressing position through the release position as the screw member moves in the first direction. Further, as the screw member moves in the second direction, the screw member can move from the pressing position to the standby position through the release position. The direction connecting the release position and the standby position is directed to an inclination direction that is inclined away from the object to be fixed and the fixed base toward the standby position side with respect to the axial center direction. Furthermore, in order to guide the movement of the pressing member between the standby position and the pressing position, one of the pressing member and the main body member is provided with a guide portion, A guided portion that is relatively guided by the guide portion is provided.

  When the object to be fixed is fixed to the fixed base using the clamp device, first, the object to be fixed is arranged at a predetermined position of the fixed base with the pressing member positioned at the standby position. Then, the screw member is moved in the first direction by rotating in the one direction. By doing so, as the screw member moves in the first direction, the guided portion is guided to the guide portion, and the pressing member approaches the fixed object and the fixed base along the inclined direction, Move from the standby position to the release position. Therefore, by further rotating the screw member in the one direction, the pressing member moves from the release position to the pressing position along the first direction to press the object to be fixed. Thus, the fixed object is fixed to the fixed base.

  Further, when the object to be fixed fixed to the fixed base is removed from the fixed base, the screw member is moved in the second direction by rotating in the other direction. By doing so, as the screw member moves in the second direction, the guided portion is guided by the guide portion, and the pressing member moves from the pressing position to the release position along the second direction. , Release the pressed object. Therefore, by further rotating the screw member in the other direction, the pressing member moves from the release position to the standby position so as to be separated from the fixed object and the fixed base along the inclined direction. Thus, the object to be fixed can be detached from the fixed base. That is, in this clamping device, the pressing member moves between the standby position and the pressing position in conjunction with the turning operation of the screw member, so that the workability is excellent.

  Further, as in the clamp device according to the invention described in claim 2, in the clamp device according to claim 1, the pressing member has a long hole through which a shaft portion of the screw member passes, and the long hole is In addition, it is desirable that it is formed in a direction perpendicular to the direction of the axial center and to be long in a direction connecting the distal end side and the proximal end side of the pressing member.

  According to a third aspect of the present invention, there is provided the clamping device according to the second aspect, wherein the pressing member moves from the standby position as the screw member moves in the second direction. In order to limit the guide portion, the guide portion has a restricting surface with which the guided portion abuts when the pressing member moves from the release position to the standby position. In this clamp device, when the screw member is rotated in the other direction and the pressing member is moved from the release position to the standby position, the guided portion comes into contact with the regulation surface of the guide portion. Therefore, even if the screw member is further rotated in the other direction from that state, the pressing member does not move further. Therefore, when the object to be fixed is removed from the fixed base, the pressing member does not come off from the main body member even if the screw member is excessively rotated in the other direction.

  Further, as in the clamp device according to the invention described in claim 4, in the clamp device according to claim 3, when the screw member moves in the second direction, the shaft portion of the screw member is It is desirable to have a retaining means for preventing the pressing member from slipping out of the long hole.

  The clamp device according to a fifth aspect of the present invention is the clamp device according to the fourth aspect, wherein the retaining means is a lower surface of the pressing member when the screw member moves in the second direction. And an abutting portion provided on the shaft portion of the screw member.

  Further, in the clamping device according to any one of claims 1 to 5, like the clamping device according to the invention according to claim 6, the main body member is erected with the pressing member interposed therebetween. The guide portion or the guided portion may be provided on the pair of side wall portions.

  Moreover, in the clamping device according to any one of claims 1 to 6, as in the clamping device according to the invention according to claim 7, the guide portion includes a hole or a groove, and the guided portion. The portion includes a protrusion that engages with the hole or groove, and the hole or groove includes a first hole or groove extending along the direction of the axis, and the first hole or groove. You may have the 2nd hole or groove | channel extended along the said inclination direction from one end.

  Further, as in the clamp device according to the invention described in claim 8, in the clamp device according to any one of claims 1 to 7, the pressing member has the pressing portion on a tip side thereof, In addition, when the pressing portion presses the object to be fixed to the main body member or the fixed base, a supporting member that supports the proximal end side of the pressing member can be adjusted in height in the direction of the axis. It may be attached to. Thus, the base end side of the pressing member is supported by the support member attached to the main body member or the fixed base, and the pressing portion on the distal end side of the pressing member presses the object to be fixed. It can be firmly fixed to the fixed base. Moreover, since the support member is attached so that the height can be adjusted in the direction of the axis, the support member can also correspond to an object to be fixed having various heights.

  Further, as in the clamping device according to the invention described in claim 9, in the clamping device according to any one of claims 1 to 7, the pressing member has the pressing portion on a tip side thereof, And when the said press part presses the said to-be-fixed object at the base end side of the said press member, the to-be-supported member supported by the said main body member or the said fixed base is length in the direction of the said axial center. It may be adjustable. Thus, the supported member attached to the proximal end side of the pressing member is supported by the main body member or the fixed base, and the pressing portion on the distal end side of the pressing member presses the object to be fixed. An object can be firmly fixed to a fixed base. In addition, since the supported member is attached in such a manner that its length can be adjusted in the direction of the axis, the supported member can correspond to an object to be fixed having various heights.

  According to the clamp device according to the present invention, the pressing member moves between the standby position and the pressing position in conjunction with the turning operation of the screw member, and therefore, the workability is excellent.

  Hereinafter, the best mode for carrying out a clamping device according to the present invention will be described with reference to the drawings.

  1 to 8 show an embodiment of the present invention. Reference numeral 1 in the figure denotes a fixed base such as a fixture base attached to a pallet or table of a machine tool such as a machining center. Reference numeral 2 denotes, for example, a workpiece as a fixed object to be processed. Reference numeral 3 denotes a clamp device for fixing the workpiece 2 to the fixed base 1.

  The clamp device 3 includes a main body member 4 that is detachably attached to the fixed base 1, a pressing member 5 that fixes the work 2 so as to press it, and a screw member 6. Here, the main body member 4 or the fixed base 1 (in the illustrated embodiment, the fixed base 1) is provided with a female screw portion 7 as a first screw portion. Further, the pressing member 5 has a pressing portion 5 a that presses the workpiece 2. The screw member 6 has a male screw portion 8 as a second screw portion that is screwed into the female screw portion 7. The direction of the axis 9 in the threaded engagement between the female screw portion 7 and the male screw portion 8 is a pressing position where the pressing member 5 presses the workpiece 2 in a state where the pressing portion 5a of the pressing member 5 faces the workpiece 2. The direction is the same as the direction connecting the release position where the pressure is released (in the illustrated embodiment, the vertical direction).

  Therefore, the screw member 6 rotates in one direction (clockwise direction X in the illustrated embodiment), so that the release in the direction of the shaft center 9 with respect to the female screw portion 7 of the fixed base 1 is performed. The internal thread portion of the fixed base 1 moves in the first direction P that faces from the position toward the pressing position and rotates in the other direction (counterclockwise direction Y in the illustrated embodiment). 7 is moved in the second direction Q facing the direction from the pressing position in the direction of the axis 9 toward the release position (see FIG. 2). The pressing member 5 can move from the standby position where the pressing portion 5a does not face the work 2 to the pressing position through the release position as the screw member 6 moves in the first direction P. As the screw member 6 moves in the second direction Q, the screw member 6 can move from the pressing position to the standby position through the release position (see FIGS. 3 to 8). The direction connecting the release position and the standby position is directed to an inclination direction that is inclined away from the workpiece 2 and the fixed base 1 toward the standby position side with respect to the direction of the axis 9. Furthermore, in order to guide the movement of the pressing member 5 between the standby position and the pressing position, either the pressing member 5 or the main body member 4 (the main body member 4 in the illustrated embodiment) A guide portion 21 is provided, and a guided portion 22 that is relatively guided by the guide portion 21 is provided on the other (the pressing member 5 in the illustrated embodiment).

  Specifically, the main body member 4 includes a plate-like base portion 4a and a pair of side wall portions 4b, 4b that are erected from both end portions of the base portion 4a so as to place the pressing member 5 therebetween. (See FIGS. 1 and 2). Further, the base portion 4a is formed with a through hole 4c through which the screw member 6 is inserted, and an attachment hole 4d through which an attachment bolt 23 for attaching and fixing the main body member 4 to the fixed base 1 is inserted (FIG. 1). FIG. 4). The main body member 4 is detachably attached and fixed to the fixed base 1 by inserting the attachment bolt 23 into the attachment hole 4 d and screwing the attachment bolt 23 into the female screw provided in the fixed base 1.

  And the said guide part 21 is provided in this pair of side wall parts 4b and 4b (refer FIGS. 1-3). In the illustrated embodiment, the guide portion 21 includes a hole 21a formed so as to penetrate in the thickness direction of the side wall portion 4b. The hole 21a is linearly extended along the inclined direction from one end of the first hole 21b and the first hole 21b extending linearly along the direction of the axis 9. The second hole 21c (specifically, a straight line along the third direction R from the release position in the inclined direction toward the standby position from one end of the first hole 21b opposite to the base portion 4a side) And a second hole 21c) extending in a shape. Further, the pressing member 5 is restricted from moving from the standby position (moving along the third direction R in the illustrated embodiment) as the screw member 6 moves in the second direction Q. Therefore, the guide part 21 has a regulating surface 21d with which the guided part 22 comes into contact when the pressing member 5 moves from the release position to the standby position. In the illustrated embodiment, the regulating surface 21d is formed in a curved surface at the end of the second hole 21c opposite to the first hole 21b side (see FIGS. 1 to 3). .

  The pressing member 5 is formed in a substantially rectangular parallelepiped shape, and has the pressing portion 5a on the tip 5b side (see FIGS. 1 to 3). And the press member 5 has the long hole 5c through which the axial part 6a of the screw member 6 passes in the position which approached the front-end | tip 5b side from the center part (refer FIG. 1). The long hole 5c is a direction orthogonal to the direction of the axis 9 and a direction connecting the distal end 5b side and the proximal end 5d side of the pressing member 5 (that is, the same as the longitudinal direction of the pressing member 5). Direction). Further, a step portion 5 f that is recessed toward the second direction Q is formed on the lower surface 5 e on the base end 5 d side of the pressing member 5.

  And the said guided part 22 is provided in the side surfaces 5g and 5g of the press member 5 (refer FIGS. 1-3). In the illustrated embodiment, the guided portion 22 includes a protrusion 22a that engages with the hole 21a. Specifically, the pressing member 5 is formed with a through hole 22b penetrating between both side surfaces 5g and 5g, and a rod-shaped pin member 22c is inserted into the through hole 22b (see FIG. 1). The pin member 22c is fixed to the pressing member 5 by screwing a set screw 22e into a set screw hole 22d opened in the upper surface 5h of the pressing member 5 so as to communicate with the through hole 22b (FIG. 4). reference). And the front-end | tip part which protruded from each side 5g, 5g of the press member 5 of the pin member 22c is the said protrusion 22a.

  The screw member 6 includes the shaft portion 6a formed in a rod shape concentric with the shaft center 9, and a substantially hexagonal column-shaped head portion 6b provided on the shaft portion 6a (FIG. 1, FIG. (See FIG. 2). A ring portion 6c is provided at the boundary portion between the shaft portion 6a and the head portion 6b. Is formed. The screw member 6 is assembled to the pressing member 5 so that the ring portion 6c and the upper surface 5h of the pressing member 5 are in contact with each other, and the shaft portion 6a is inserted into the long hole 5c of the pressing member 5. (See FIG. 4). Further, the male screw portion 8 is formed from the tip portion side of the shaft portion 6a opposite to the head portion 6b to the substantially intermediate position.

  Here, the clamp device 3 has a retaining means for preventing the shaft portion 6a of the screw member 6 from coming out of the elongated hole 5c of the pressing member 5 when the screw member 6 moves in the second direction Q. . Specifically, the retaining means is provided on the shaft portion 6a of the screw member 6 that directly or indirectly contacts the lower surface 5e of the pressing member 5 when the screw member 6 moves in the second direction Q. The contact portion 6d is provided. In the illustrated embodiment, an engagement groove 6e is formed at a substantially intermediate position of the shaft portion 6a along the circumferential direction of the shaft portion 6a, and the contact portion 6d is attached to the engagement groove 6e. The plate member 6f is substantially U-shaped in plan view (see FIG. 1). The plate member 6 f has a width that is larger than the width in the short direction of the long hole 5 c of the pressing member 5, and is in direct contact with the lower surface 5 e of the pressing member 5. Therefore, the screw member 6 is assembled to the pressing member 5 so as to sandwich the pressing member 5 between the ring portion 6c and the plate member 6f (see FIG. 4).

  Further, when the pressing portion 5 a of the pressing member 5 presses the workpiece 2 at the rear position of the main body member 4 (that is, the side opposite to the workpiece 2) of the fixed base 1, the base end 5 d of the pressing member 5. A support member 24 that supports the side is attached so as to be adjustable in height in the direction of the axis 9 (see FIGS. 3 to 8). Specifically, the support member 24 includes a bolt member 24a that is screwed into a bolt hole 1a provided at the rear position of the fixed base 1, a nut member 24b that is screwed into the bolt member 24a, and a bolt member 24a. It is comprised with the support part 24c provided in the top part. Then, the bolt member 24a is screwed into the bolt hole 1a so that the support portion 24c is positioned at a predetermined height position, and the nut member 24b is tightened to the bolt member 24a so as to press against the fixed base 1. Thus, the height of the support member 24 can be adjusted and set.

  Next, the effect of the clamp apparatus 3 which consists of the above structure is demonstrated. When the workpiece 2 is fixed to the fixed base 1 using the clamp device 3, first, the workpiece 2 is arranged at a predetermined position of the fixed base 1 with the pressing member 5 positioned at the standby position. (See FIGS. 3 and 4). At this time, the protrusion 22a is located at the end of the second hole 21c opposite to the first hole 21b side (that is, the regulation surface 21 side). Further, the shaft portion 6 a of the screw member 6 is located on the distal end 5 b side in the long hole 5 c of the pressing member 5. Note that the height of the support member 24 is adjusted according to the height of the workpiece 2 before and after the work of placing the workpiece 2 (in the illustrated embodiment, the pressing portion 5a and the step portion 5f). In consideration of the height positional relationship, the support portion 24c of the bolt member 24a is adjusted to be positioned above the upper surface of the workpiece 2. Then, for example, the screw member 6 is rotated in the clockwise direction X by using a manual tool, an impact wrench, a nut runner (a torque wrench such as electric drive or air drive), etc. Move to P. At this time, the ring portion 6 c of the screw member 6 presses the upper surface 5 h of the pressing member 5. As the screw member 6 moves in the first direction P, the protrusion 22a is guided by the second hole 21c, and the pressing member 5 moves in the direction opposite to the third direction R, that is, the Along the fourth direction S facing the direction from the standby position to the release position in the tilt direction, the workpiece 2 and the fixed base 1 are approached (in the illustrated embodiment, the shaft portion 6a of the screw member 6 is In the long hole 5c of the pressing member 5, it moves from the stand-by position to the release position so as to slide relatively from the tip 5b side to the base end 5d side (see FIGS. 5 and 6). ). Then, the protrusion 22a enters the first hole 21b from the second hole 21c. Therefore, by further rotating the screw member 6 in the clockwise direction X, the ring portion 6c of the screw member 6 presses the upper surface 5h of the pressing member 5, and the protrusion 22a is formed by the first hole 21b. Guided, the pressing member 5 moves from the release position to the pressing position along the first direction P (see FIGS. 7 and 8). Then, the base end 5d side of the pressing member 5 is supported by the support member 24 (in the illustrated embodiment, the support portion 24c of the bolt member 24a contacts the step portion 5f of the pressing member 5) and the pressing The pressing part 5 a of the member 5 presses the work 2. Thus, the work 2 is fixed to the fixed base 1.

  Further, when the workpiece 2 fixed to the fixed base 1 is removed from the fixed base 1, the screw member 6 is moved in the second direction Q by rotating in the counterclockwise direction Y. At this time, the contact portion 6d of the screw member 6 (in the illustrated embodiment, the plate member 6f) presses the lower surface 5e of the pressing member 5. Then, as the screw member 6 moves in the second direction Q, the protrusion 22a is guided by the first hole 21b, and the pressing member 5 is released from the pressing position along the second direction Q. It moves to the position (see FIGS. 5 and 6). Thus, the pressing member 5 releases the pressing of the work 2. Therefore, by further rotating the screw member 6 in the counterclockwise direction Y, the contact portion 6d (the plate member 6f in the illustrated embodiment) of the screw member 6 lifts the lower surface 5e of the pressing member 5. The protrusion 22a enters the second hole 21c from the first hole 21b. The protrusion 22a is guided by the second hole 21c, and the pressing member 5 is separated from the workpiece 2 and the fixed base 1 along the third direction R (in the illustrated embodiment, a screw member). 6 is moved from the release position to the standby position within the elongated hole 5c of the pressing member 5 so as to slide relative to the distal end 5b side from the proximal end 5d side (see FIG. (See FIGS. 3 and 4). When the pressing member 5 moves to the standby position, the protrusion 22a comes into contact with the regulating surface 21d of the second hole 21, and the movement of the pressing member 5 in the third direction R is completed. Thereafter, the workpiece 2 is removed from the fixed base 1.

  Thus, in this clamping device 3, the pressing member 5 moves between the standby position and the pressing position in conjunction with the turning operation of the screw member 6. The movement between the standby position and the release position does not need to be performed by using a hand each time, and the work 2 can be easily fixed and removed, resulting in excellent workability.

  Further, when the screw member 6 is rotated in the counterclockwise direction Y and the pressing member 5 is moved from the release position to the standby position, the protrusion 22a is brought into contact with the restriction surface 21d of the second hole 21c. Therefore, even if the screw member 6 is further rotated in the counterclockwise direction Y from the state, the pressing member 5 is further moved (specifically, the pressing member 5 is moved along the third direction R). There is nothing. Therefore, when the workpiece 2 is removed from the fixed base 1, the pressing member 5 does not come off the main body member 4 even if the screw member 6 is rotated too much in the counterclockwise direction Y. Further, when the workpiece 2 is fixed to the fixed base 1, the screw member 6 may be erroneously rotated in the counterclockwise direction Y with the pressing member 5 positioned at the standby position. The member 5 does not move and further does not come off the main body member 4. Moreover, since the clamping device 3 has the retaining means (in the illustrated embodiment, the contact portion 6d provided on the shaft portion 6a of the screw member 6, that is, the plate member 6f), the screw member It is possible to prevent the four shaft portions 4 a from coming out of the long holes 5 c of the pressing member 5.

  Further, the base end 5 d side of the pressing member 5 is supported by the support member 24, and the pressing portion 5 a of the pressing member 5 presses the workpiece 2 to firmly fix the workpiece 2 to the fixed base 1. Can do. Further, since the support member 24 is attached so as to be adjustable in height in the direction of the axis 9, it can correspond to workpieces having various heights.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, even if the fixed base 1 is not a fixture base attached to a pallet or table of a machine tool such as an MC (machining center), the fixed base 1 is placed on a conveying device such as a conveying belt in an assembly line, for example. It may be a fixture base. Then, the clamp device 3 may temporarily hold an assembly part as an object to be fixed to the fixture base. As described above, the object to be fixed may not be the workpiece 2, but may be a jig, a fixture, a mold, or the like. Further, the work 2 is placed on the fixed base 1. For example, a receiving part extended from the main body member 4 is provided, and the work 2 is placed on the receiving part, so that the work is interposed via the receiving part. 2 may be fixed to the fixed base 1.

  In addition to the fixture base, the fixed base 1 may be an MC pallet, a machine table, other tables, or the like. In addition, the fixed base 1 is not necessarily in the illustrated embodiment, for example, the part on which the workpiece 2 is placed and the part to which the main body member 4 of the clamp device 3 is attached and fixed are formed as separate bases. Thus, there is no need for the base to be integrally formed.

  Further, the first screw portion (in the illustrated embodiment, the female screw portion 7) is provided on the fixed base 1, but may be provided on the main body member 4. Here, for example, the thickness of the base portion 4a of the main body member 4 may be increased, and a female screw portion may be provided on the base portion 4a.

  In addition, the first threaded portion is composed of the female threaded portion 7 and the second threaded portion is composed of the male threaded portion 8. On the contrary, the first threaded portion is composed of the male threaded portion, and the second threaded portion is composed of the female threaded portion. It may consist of parts. Also in this case, the first screw portion (male screw portion) may be provided in the main body member 4.

  Further, the guide portion 21 may be formed of a groove having a bottom portion or a groove having a bottom portion formed so as to penetrate in the thickness direction of the side wall portion 4b (that is, the first hole 21b). The second hole 21c may be a first groove and a second groove, respectively). Further, the guide portion 21 is provided on the main body member 4 and the guided portion 22 is provided on the pressing member 5. On the contrary, the guiding portion 21 is provided on the pressing member 5 and the guided portion 22 is provided. The main body member 4 may be provided.

  Further, the pressing member 5 is formed with through holes 22b penetrating between both side surfaces 5g and 5g, and rod-like pin members 22c are inserted into the through holes 22b. Pin insertion holes having bottom portions are formed in 5g, and pin members each having a shorter dimension than the pin member 22c may be inserted into the pin insertion holes. Even in this case, the tip portion of each pin member (specifically, the tip portion protruding from each side surface 5g, 5g of the pressing member 5) becomes the protrusion 22a.

  Further, the guide portion 21 (in the illustrated embodiment, the hole 21a) or the guided portion 22 (in the illustrated embodiment, the protruding portion 22a) is provided with friction reducing means such as a bearing or a roller, for example. You may make it perform the relative guidance of the to-be-guided part 22 by the part 21. FIG. Thereby, the movement of the pressing member 5 between the standby position and the pressing position can be performed smoothly.

  Further, since the direction connecting the release position and the standby position is directed to the inclination direction that is inclined away from the workpiece 2 and the fixed base 1 toward the standby position side with respect to the direction of the axis 9. If there is, the second hole 21c of the hole 21a does not necessarily have to extend linearly from one end of the first hole 21b along the inclined direction. For example, as shown in FIG. It may be bent halfway or curved. Also in this case, the hole 21a may be formed of a groove having a bottom portion, the guide portion 21 (hole 21a) is provided in the pressing member 5, and the guided portion 22 is provided in the main body member 4. It may be done.

  Moreover, even if the regulation surface 21d is not formed in a curved surface shape, it may be formed in a planar shape. Moreover, the guide part 21 (in the illustrated embodiment, the second hole 21 c) may not have the restriction surface 21.

  Moreover, the screw member 6 may be a screw member with a hexagonal hole in which a hexagonal hole is formed in the head 6b. Further, the ring portion 6c and the plate member 6f may not be in direct contact with the upper surface 5h and the lower surface 5e of the pressing member 5, respectively, or may be in indirect contact. Here, for example, by inserting an interposition such as a spherical washer between the upper surface 5h of the pressing member 5 and the ring portion 6c and between the lower surface 5e of the pressing member 5 and the plate member 6f, these spherical surfaces are obtained. You may make it contact | abut indirectly through a washer.

  In addition, an allowable space portion that allows the inclination of the pressing member 5 with respect to the axis 9 may be provided between the screw member 6 and the pressing member 5. Here, for example, as described above, there is a case where a spherical washer is interposed between the upper surface 5h of the pressing member 5 and the ring portion 6c and between the lower surface 5e of the pressing member 5 and the plate member 6f. Thus, the allowable space is formed around the spherical washers. The inclination of the pressing member 5 with respect to the shaft center 9 is allowed. For example, even if an error occurs in the height adjustment of the support member 24, the pressing member 5 is inclined with respect to the shaft center 9. Thus, the workpiece 2 can be reliably pressed.

  Further, the support member 24 may not be attached to the fixed base 1 but may be attached to the main body member 4. Further, even if the support member 24 is not attached to the main body member 4 or the fixed base 1, for example, as shown in FIG. 10, the pressing portion 5a of the pressing member 5 is located on the base end 5d side of the pressing member 5. When pressing 2, a supported member 25 supported by the main body member 4 or the fixed base 1 (in the illustrated embodiment, the fixed base 1) is attached so as to be adjustable in length in the direction of the axis 9. It may be. In the illustrated embodiment, the supported member 25 is formed so as to penetrate between the upper surface 5h and the lower surface 5e (specifically, the step portion 5f) on the base end 5d side of the pressing member 5. The bolt member 25a is screwed into the bolt hole 5i, and the nut member 25b is screwed into the bolt member 25a. Thus, the supported member 25 attached to the proximal end 5d side of the pressing member 5 is supported by the main body member 4 or the fixed base 1, and the pressing portion 5a on the distal end 5b side of the pressing member 5 holds the workpiece 2. By fixing, the workpiece 2 can be firmly fixed to the fixed base 1. Moreover, since the supported member 25 is attached in the direction of the axial center 9 so that the length thereof can be adjusted, the supported member 25 can correspond to workpieces having various heights. Also in this case, inclusions such as a spherical washer may be interposed between the upper surface 5h of the pressing member 5 and the ring portion 6c, and between the lower surface 5e of the pressing member 5 and the plate member 6f.

  Further, the abutting portion 6d does not have to be a substantially U-shaped plate member 6f mounted in the engaging groove 6e. For example, the abutting portion 6d is a nut member screwed into the shaft portion 6a or the male screw portion 8. There may be. Further, in this clamping device 3, the contact portion 6 d (plate member 6 f) provided on the shaft portion 6 a of the screw member 6 presses the lower surface 5 e of the pressing member 5, whereby the screw member 6. With the movement in the second direction Q, the pressing member 5 is moved from the pressing position to the standby position. For example, instead of the contact portion 6d, the pressing member 5 and the base of the main body member 4 are moved. For example, by providing an elastic member such as a coil spring between the portion 4a, the pressing member 5 may be moved by elastically urging the elastic member by the elastic restoring force of the elastic member.

  Further, in the illustrated embodiment, a through hole 5j is formed on the tip 5b side of the pressing member 5 so as to penetrate along the direction of the axis 9; for example, as shown in FIG. In addition, the shaft portion of the screw member (male screw member) 5k may be inserted into the through hole 5j, and the screw member 5k (specifically, the head portion of the male screw member) may be used as the pressing portion 5a. In the embodiment shown in the figure, the screw member (male screw member) 5k is inserted into the through hole 5j from the lower side of the pressing member 5, and from the upper side with respect to the protruding shaft portion. A nut 5 m is tightened and attached to the pressing member 5. Further, the screw member (male screw member) 5k may be a screw member with a pad (male screw member) provided with a pad for preventing the workpiece 2 (fixed object) from being damaged on the head side. Good. As described above, the pressing portion 5 a is not necessarily formed integrally with the pressing member 5, and may be formed separately from the pressing member 5.

It is a disassembled perspective view of one embodiment of this invention. Similarly, it is a perspective view at the time of assembly | attachment, Comprising: The press member has the state in a press position. Similarly, it is a side view when the pressing member is in the standby position. Similarly, it is a longitudinal sectional view. Similarly, it is a side view when the pressing member is in the release position. Similarly, it is a longitudinal sectional view. Similarly, it is a side view when the pressing member is in the pressing position. Similarly, it is a longitudinal sectional view. It is a principal part expanded side view of other Embodiment of this invention. FIG. 9 is a view corresponding to FIG. 8 of still another embodiment of the present invention. It is a principal part expanded sectional view of further another embodiment of this invention. It is a fragmentary sectional view which shows the conventional clamp apparatus.

Explanation of symbols

1 Fixed base 2 Workpiece (fixed object)
DESCRIPTION OF SYMBOLS 3 Clamp apparatus 4 Main body member 4b Side wall part 5 Pressing member 5a Pressing part 5b Tip 5c Long hole 5d Base end 5e Lower surface 6 Screw member 6a Shaft part 6d Contact part 7 Female thread part (1st thread part)
8 Male thread (second thread)
9 shaft center 21 guide portion 21a hole 21b first hole 21c second hole 21d regulating surface 22 guided portion 22a projection 24 support member 25 supported member X clockwise direction (one direction)
Y Counterclockwise direction (other directions)
P 1st direction Q 2nd direction R 3rd direction (inclination direction)
S 4th direction (inclination direction)

Claims (9)

A clamping device for fixing an object to be fixed to a fixed base,
A main body member that is detachably attached to the fixed base, a pressing member that fixes the object to be fixed, and a screw member;
The main body member or the fixed base is provided with a first screw portion,
The pressing member has a pressing portion that presses the fixed object,
The screw member has a second screw portion that is screwed with the first screw portion,
The direction of the axial center in the screwing of the first screw part and the second screw part is a pressing position where the pressing member presses the fixed object in a state where the pressing part faces the fixed object. , The same direction as the direction connecting the release position to release the press,
The screw member rotates in one direction to move in a first direction facing the direction from the release position in the axial direction toward the pressing position with respect to the first screw portion, and , By rotating in the other direction, the first screw part moves in the second direction facing the direction from the pressing position in the axial direction toward the release position,
The pressing member is movable from a standby position where the pressing portion does not face the object to be fixed to the pressing position through the release position as the screw member moves in the first direction. Along with the movement of the screw member in the second direction, the screw member can move from the pressing position to the standby position through the release position, and
The direction connecting the release position and the standby position is directed to an inclination direction that is inclined away from the fixed object and the fixed base toward the standby position side with respect to the axial center direction.
In order to guide the movement of the pressing member between the standby position and the pressing position, one of the pressing member and the main body member is provided with a guide portion, and the other of the pressing member A clamp device, characterized in that a guided portion that is relatively guided by a guide portion is provided. The pressing member has a long hole through which the shaft portion of the screw member passes,
The long hole is formed in a direction perpendicular to the direction of the axial center and in a direction that connects the distal end side and the proximal end side of the pressing member, The clamping device according to claim 1. In order to restrict the pressing member from moving from the standby position as the screw member moves in the second direction,
The clamp device according to claim 2, wherein the guide portion has a regulation surface with which the guided portion comes into contact when the pressing member moves from the release position to the standby position.   The screw member according to claim 3, further comprising a retaining means for preventing the shaft portion of the screw member from coming out of the elongated hole of the pressing member when the screw member moves in the second direction. The clamping device as described.   The retaining means includes a contact portion provided on the shaft portion of the screw member that directly or indirectly contacts the lower surface of the pressing member when the screw member moves in the second direction. The clamping device according to claim 4, wherein   The main body member has a pair of side wall portions erected with the pressing member interposed therebetween, and the guide portion or the guided portion is provided on the pair of side wall portions. The clamping device according to any one of claims 1 to 5. The guide part is composed of a hole or a groove, and the guided part is composed of a protrusion that engages with the hole or groove,
The hole or groove includes a first hole or groove extending along the axis and a second hole extending along the inclined direction from one end of the first hole or groove. The clamping device according to claim 1, further comprising a groove. The pressing member has the pressing portion on the tip side, and
A support member that supports the base end side of the pressing member is attached to the main body member or the fixed base so that the height can be adjusted in the direction of the axis when the pressing portion presses the object to be fixed. The clamping device according to claim 1, wherein the clamping device is provided. The pressing member has the pressing portion on the tip side, and
On the base end side of the pressing member, when the pressing portion presses the object to be fixed, the supported member supported by the main body member or the fixed base can be adjusted in length in the direction of the axis. The clamp device according to claim 1, wherein the clamp device is attached to the clamp device.

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