JPH0578439U - Workpiece fixing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a workpiece fixing device capable of improving workability and saving labor by enabling a worker to fix a workpiece to a mounting substrate. A mounting member and one end of a clamp device 23 are mounted in the groove 11 of the mounting substrate 2, and a jack 18 adjusted to a height from the mounting surface 3 of the workpiece 1 is fitted and fixed to one end of the arm 16. Further, the indexing portion 17 of the arm 16 is engaged with the indexing piece 15 so that the jack 18 is arranged between the mounting surface 3 of the mounting substrate 2 and the clamp device 23, and the arm 16 is moved to a predetermined angle. Position. In this state, the work piece 1 is placed between the mounting surface 3 and the clamp device 23.
The work piece 1 is fixed to the mounting substrate 2 by sandwiching and clamping the clamp nut 28.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a workpiece fixing device for mounting a workpiece on a vertical surface or an inclined surface of a mounting substrate mounted on a table of a machine tool when performing a machining operation.

[0002]

[Prior Art]

 Conventionally, in processing work at a machining center, etc., when fixing a work piece to a mounting substrate using a general screw jack and a clamp device, the following operation is performed. As shown in FIGS. 12 and 13, the mounting substrate 2 is fixed to a table of a machining center (not shown), and the clamp device 6 is provided with the groove 11 provided on the vertical mounting surface 3 of the mounting substrate 2. By engaging one end of the clamp shaft 8 and slightly loosening the nut 7 provided on the clamping device 6, the workpiece 1 is sandwiched between the vertical mounting surface 3 of the mounting substrate 2 and the clamping device 6. After rotating the adjusting shaft 5 of the screw jack 4 to align it with the height of the workpiece 1 from the vertical mounting surface 3, the screw jack 4 is placed between the vertical mounting surface 3 of the mounting substrate 2 and the clamp device 6. To place. In this state, the workpiece 1 is fixed to the mounting substrate 2 by tightening the nut 7 of the clamp device 6.

[0003]

[Problems to be solved by the device]

 However, since the mounting surface of the work piece is perpendicular to the ground, there is a high possibility that the jack will drop on the ground if there is only one worker. The worker holds the jack and the work piece in his hand, and the other worker fixes the work piece on the mounting board by tightening the nut of the clamp device. In this case, two workers are required, and there is a problem that workability is poor and labor can not be saved. Also, if a single worker tries to fix the work piece to the mounting board, it may be difficult to fix the work, and the jack may drop on the surface plate and damage the surface plate. ..

On the other hand, there is known a screw jack with fixing screw as disclosed in Japanese Utility Model Laid-Open No. 60-186143. In this jack, one of the two screw bolts is screwed into the bottom surface of the jack, and the other of the screw bolts is screwed into the bottom nut of the T groove of the table or the screw hole of the table to fix the jack. When fixing a workpiece using this screw jack with fixing screw, it is possible to position the jack in the T-slot, but the jack should be fixed in any position other than the T-slot. I can't.

The present invention solves the above-mentioned problems, and by allowing a single worker to fix a workpiece to a mounting base plate, workability can be improved, labor can be saved, and a jack can be used. An object of the present invention is to provide a workpiece fixing device capable of preventing damage to a surface plate due to a fall of a key and fixing and positioning a jack at an arbitrary position on a mounting surface.

[0006]

[Means for Solving the Problems]

 To achieve the above object, the present invention provides a mounting member, one end of which is mounted in a groove or a screw hole of a mounting substrate on which a workpiece is mounted, and an arm whose one end is engaged with the other end of the mounting member and which can be positioned at a predetermined angle. And a jack which is attached to the other end of the arm and whose length in the direction orthogonal to the surface of the attachment base plate is adjustable, and a clamp device for fixing the workpiece to the attachment substrate in cooperation with the jack. It is equipped with and.

[0007]

[Action]

 According to the above configuration, each end of the mounting member and the clamp device is mounted in the groove or screw hole of the mounting substrate, and the jack is fitted and fixed to the other end of the arm, and the length of the jack is adjusted from the mounting surface of the workpiece. Adjust to approximately equal to height. In addition, engage one end of the arm with the other end of the mounting member so that this jack is located between the mounting surface of the mounting substrate and the clamping device on the opposite side of the workpiece with the clamping device in between. Position the arm at the specified angle. In this state, the workpiece is sandwiched between the surface of the mounting board and the clamp device, and the clamp device is tightened to fix the workpiece to the mounting board. By doing this, the jack can be positioned and fixed in advance at an arbitrary position, and it is not necessary to hold the jack when attaching the workpiece, so it is not necessary for another operator to help. Since the worker can tighten the clamp device and fix the work piece to the mounting board, labor can be saved.

[0008]

【Example】

 Hereinafter, a first embodiment embodying the present invention will be described with reference to FIGS. 1 is a perspective view of the vicinity of the fixing device, FIG. 2 is a perspective view of a mounting member, an arm and a jack, FIG. 3 is a side view of the mounting member, an arm and a jack, and FIG. 4 is a partial top view of the mounting member and an arm. .. The workpiece fixing device according to this embodiment includes a mounting member 13 to be mounted on a mounting substrate, an arm 16 that can be positioned at a predetermined angle, a screw jack 18 and a clamp device 23 for fixing the workpiece 1 to the mounting substrate 2. Composed. A bottom nut 14 is provided at one end of the mounting member 13, and an indexing piece 15 is provided at the other end. An indexing portion 17 having a tooth shape is provided at one end of the arm 16, and the indexing portion 17 is engaged with the indexing piece 15 of the mounting member 13 at an arbitrary angular relationship. A hole is formed in the other end of the arm 16, and a screw jack 18 whose length can be adjusted to extend and retract is fitted into this hole and is fixed by tightening with a screw 29.

The screw jack 18 includes a support column 19, an adjustment shaft 20, and a lock nut 22 for fixing the adjustment shaft 20 to the support column 19. A female screw (not shown) is formed inside the column 19, and a male screw 21 formed at the tip of the adjusting shaft 20 is screwed into the female screw. The height of the adjusting shaft 20, that is, the length of the screw jack 18 can be adjusted by the female screw and the male screw 21. The clamp device 23 includes a clamp plate 24 for abutting against the workpiece 1, a clamp shaft 25 whose base end is fixed to the mounting substrate 2, and a screw portion 26 formed at one end of the clamp shaft 25. It is composed of a clamp nut 28 that can be screwed and a washer 27.

An operation of fixing the workpiece 1 to the mounting substrate 2 in the above configuration will be described. A mounting substrate 2 for mounting the workpiece 1 is fixed to a table of a machining center (not shown), and a vertical mounting surface 3 of the mounting substrate 2 is provided with a groove 11 having a T-shaped cross section extending parallel to the horizontal plane of the table. There is. The one end of the clamp shaft 25 of the clamp device 23 is engaged with the groove 11 so that the workpiece 1 can be sandwiched between the clamp plate 24 and the vertical mounting surface 3 of the mounting substrate 2 by the clamp device 23. Loosen the nut 28 a little. Further, the bottom nut 14 of the mounting member 13 is engaged with the groove 11, and the mounting member 13 is moved to the vicinity of the clamp plate 24 and positioned. On the other hand, after adjusting the height of the adjusting shaft 20 of the screw jack 18 to be equal to the height from the vertical mounting surface 3 of the workpiece 1, the set nut 20 is tightened to fix the adjusting shaft 20 to the support column 19. ..

Next, with respect to the indexing piece 15 of the mounting member 13, the indexing portion 17 of the arm 16 is brought into contact with the clamp plate 24 by the head portion 20 a of the adjusting shaft 20, and the clamp shaft 25 is sandwiched therebetween. The arm 16 is positioned at a predetermined angle by being locked so as to be positioned on the side opposite to the work 1 mounting side. In order to change the mounting angle of the arm 16, it is necessary to insert and remove the indexing portion 17 from the indexing piece 15. The work piece 1 is placed on the mounting board 2 by positioning the work piece 1 between the clamp plate 24 and the vertical mounting surface 3 of the mounting board 2 and tightening the clamp nut 28 using a tool such as a spanner. Fix it. Although the work 1 is fixed on the left side in the figure, the work 1 is also fixed on the upper, lower, and right sides of the work 1, and the work 1 is fixed to the mounting substrate 2 at a total of four positions. Good. By doing so, it is not necessary to hold the screw jack 18 in hand, so that one operator can tighten the clamp device 23 and attach the work piece 1 to the mounting substrate without the help of another operator. Since it can be fixed to 2, labor saving can be achieved.

Next, a second embodiment will be described with reference to FIGS. In the first embodiment described above, the case where the indexing portion 17 is provided at one end of the arm 16 is shown. However, in the second embodiment, the one-way clutch 30 capable of bidirectional switching is provided at one end of the arm 16. Has been. 5 is a perspective view of the mounting member, the arm and the jack according to the second embodiment, FIG. 6 is a side view of the mounting member, the arm and the jack, and FIG. 7 is a partial top view of the mounting member and the arm. The one-way clutch 30 includes a gear 31 having a square hole 32 engageable with the indexing piece 15 of the mounting member 13, a clutch rod 33 having a tooth portion 34 engageable with the gear 31, and a clutch rod 33. A steel ball 37 capable of engaging with the cam grooves 35 and 36 provided in the armature, a compression spring 38 for applying an urging force to the steel ball 37, and a stopper screwed to the arm 16 for receiving the compression spring 38. It is composed of screws 39. The gear 31 is prevented from coming off the arm 16 by the ring plate 40 and the set screw 41. The cam grooves 35, 36 have a gently sloping surface on the center side and a steep sloping surface on both end sides.

In the above structure, the procedure for fixing the workpiece 1 is almost the same as that of the first embodiment, but the arm 16 is positioned after the square hole 32 on the arm 16 side is locked to the indexing piece 15. Is different. That is, in this embodiment, the mounting member 13 is mounted on the right side counterclockwise, and when mounted on the left side thereof, the mounting member 13 is mounted clockwise. The arm 16 is rotatable with respect to 13.

A case where the workpiece 1 is mounted on the right side of the mounting member 13 will be described with reference to FIG. In this case, the arm 16 is rotated only counterclockwise, and the arm 16 is prevented from rotating due to its own weight. For that purpose, the clutch rod 33 is moved in the direction opposite to the direction A in the figure. With this configuration, when the arm 16 is to be rotated counterclockwise, the clutch rod 33 receives a force in the A direction in the figure due to the engagement with the gear 31. Then, the steel ball 37 is pushed up along the gentle inclined surface from the center of the cam groove 35. When the arm 16 rotates a predetermined amount or more, the engagement between the gear 31 and the tooth portion 34 is once disengaged, and the teeth are engaged again, and the action of the compression spring 38 causes the clutch rod 33 to be restored. The steel ball 37 and the cam groove 35 are engaged again with the return to the position of. By repeating the above operation, the arm 16 rotates counterclockwise with an appropriate click feeling. Thus, since the arm 16 can be rotated at an arbitrary angle with respect to the mounting member 13, the screw jack 18 can be moved to a desired position while the arm 16 is mounted on the mounting member 13.

However, when the arm 16 is rotated clockwise in this state, the clutch rod 33 receives a force in the direction opposite to the A direction, but the inclination of the end of the cam groove 35 is steep, so The ball 37 cannot be pushed up. Therefore, the gear and the tooth are not disengaged from each other and cannot rotate. Therefore, the arm 16 is held without moving due to its own weight. That is, after the screw jack 18 is positioned, the screw jack 18 is held at that position even if the hand is released. In the above example, the case where the workpiece 1 is mounted on the right side of the mounting member 13 has been described. However, when mounting on the left side, the same operation is performed after moving the clutch rod 33 in the A direction. Good.

Thus, once the arm 16 is attached to the mounting member 13, it is not necessary to insert and remove the arm 16 from the mounting member 13 for positioning as in the first embodiment, and the position of the screw jack 18 can be changed. Fine adjustment can be done easily, improving workability. Also in this embodiment, similarly to the first embodiment, the workpiece 1 may be fixed to the mounting substrate 2 at a total of four places.

Next, a third embodiment will be described with reference to FIGS. 8 and 9. 8 is a perspective view of the vicinity of the fixing device according to the third embodiment, and FIG. 9 is a perspective view of an arm lever and a jack. The workpiece fixing device of this embodiment includes a mounting rod 54 to be mounted on the mounting substrate 2, an arm lever 50 having an oval groove 51, a screw jack 58 and a clamp for fixing the workpiece 1 to the mounting substrate 2. And a device 23. A screw hole 52a is provided at one end of the arm lever 50, and an annular support member 52 is screwed into the screw hole 52a. A screw jack 58 is fitted into the support member 52, and a mounting screw 53 is used. A screw jack 58 is fixed to the support member 52. A bottom nut (not shown) engageable with a groove 81 provided perpendicularly to the horizontal surface of the table is provided at one end of the attachment rod 54, and a threaded portion 55 is provided at the other end of the attachment rod 54. ing. The shaft of the mounting rod 54 is fitted into the groove 51 of the arm lever 50, the fixing nut 56 is screwed into the threaded portion 55 via the washer 57, and the fixing nut 56 is tightened, whereby the arm lever 50 is attached to the mounting substrate 2. It is fixed on the vertical mounting surface 3.

In the above configuration, the fixing nut 56 is loosened slightly, the arm lever 50 is moved along the groove 51, the screw jack 58 is moved to the vicinity of the clamp device 23, and the fixing nut 56 is tightened. The arm lever 50 is fixed to the vertical mounting surface 3 of the mounting substrate 2. Other operations are similar to those of the first embodiment. In this embodiment, since the arm lever 50 can move along the groove 51, the screw jack 58 can move freely in the longitudinal direction of the arm lever 50, improving workability. In this embodiment, one end of the mounting rod 54 is engaged with the groove 81 perpendicular to the horizontal plane of the table, but one end of the mounting rod 54 is engaged with the groove 11 parallel to the horizontal plane of the table as in the first embodiment. May be combined. Further, also in this embodiment, the work piece 1 may be fixed to the mounting substrate 2 at a total of four places as in the first embodiment.

A fourth embodiment is shown in FIGS. 10 and 11. As shown in FIG. 10, when the workpiece 1 is fixed to the mounting substrate 62 having the workpiece mounting screw hole 60 on the vertical surface, as shown in FIG. 11, the mounting member 13 in the first embodiment is also used. By providing a screw portion 61 instead of the bottom nut at one end and screwing the screw portion 61 into the screw hole 60 of the mounting substrate 62, the workpiece can be fixed as in the first embodiment. Further, the workpiece can be fixed also by providing the threaded portion 61 instead of the bottom nut at one end of the mounting rod 54 in the third embodiment.

In the various embodiments described above, the case where the workpiece 1 is fixed to the vertical mounting surface 3 of the mounting substrate 2 has been described, but the mounting surface is not limited to the vertical one, and the inclination is to some extent. It can be applied even if it has a face. Further, the place for fixing the workpiece is not limited to the mounting substrate, but may be a table having a vertical surface or an inclined surface.

[0021]

[Effect of the device]

 As described above, according to the present invention, the work piece is sandwiched between the mounting surface of the mounting board and the clamp device, and the length of the jack is adjusted to be equal to the height from the mounting surface of the work piece. The work piece is fixed to the mounting board by positioning and fixing it between the mounting surface of the mounting board and the clamp device, and then tightening the clamp device. By doing this, it is not necessary to hold the jack so that the jack does not drop when attaching the work piece, so even without having another operator help, the work piece can be attached by one operator to the base plate. Can be fixed to. Therefore, it is possible to save labor in the fixing work, and it is not necessary to drop the jack to damage the surface plate. Further, the work piece can be fixed by positioning and fixing the jack at any position other than the groove or the hole on the mounting surface.

[Brief description of drawings]

FIG. 1 is a perspective view of a fixing device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a mounting member, an arm and a jack according to the first embodiment.

FIG. 3 is a side view of a mounting member, an arm and a jack according to the first embodiment.

FIG. 4 is a partial top view of an attachment member and an arm according to the first embodiment.

FIG. 5 is a perspective view of a mounting member, an arm and a jack according to a second embodiment.

FIG. 6 is a side view of a mounting member, an arm and a jack according to a second embodiment.

FIG. 7 is a partial top view of a mounting member and an arm according to a second embodiment.

FIG. 8 is a perspective view around a fixing device according to a third embodiment.

FIG. 9 is a perspective view of an arm lever and a jack according to a third embodiment.

FIG. 10 is a perspective view of a mounting substrate in which a workpiece mounting screw hole is provided on a vertical surface.

FIG. 11 is a side view of a mounting member according to a fourth embodiment.

FIG. 12 is a perspective view showing a state in which a workpiece is fixed to a mounting substrate by a conventional technique.

FIG. 13 is a top view of a state in which a workpiece is fixed to a mounting substrate according to a conventional technique.

[Explanation of symbols]

 1 Workpiece 2,62 Mounting board 11,81 Groove 13 Mounting member 16 Arm 4,18,58 Screw jack 6,23 Clamping device 50 Arm lever 54 Mounting rod 60 Screw hole

Claims (1)

[Scope of utility model registration request] 1. A mounting member, one end of which is mounted in a groove or a screw hole of a mounting substrate on which a workpiece is mounted, an arm whose one end is engaged with the other end of the mounting member and which can be positioned at a predetermined angle, and another arm. A jack that is attached to an end and is adjustable in length in a direction orthogonal to the surface of the mounting board; and a clamp device that cooperates with the jack to fix the workpiece to the mounting board. Workpiece fixing device.