Device for placing work pieces and vice

Abstract

The invention relates to a device for supporting a workpiece between the jaws of a vise, wherein at least one support bolt (51) is provided which is arranged in a guide (525) of a support beam (52) to be connected to the vise, in which the support bolt (51) is arranged to be displaceable in the longitudinal direction of the vise when the support beam (52) is mounted. The invention further relates to a vise with a front jaw (1) and a rear jaw (2), comprising such a device.

Description

[0001] The invention relates to a device for placing workpieces in a vise and to a vise.

[0002] Vises are known in a wide variety of designs. They feature a fixed jaw and a front jaw that can be moved relative to it via a lead screw. The lead screw is equipped with a handle, allowing it to rotate. A rotational movement of the handle causes a longitudinal movement of the lead screw and the movable front jaw, clamping or releasing a workpiece between the jaws. For mounting on a base, vises typically have a base with holes for mounting screws. Such a vise is described, for example, in EP 1 884 317 A1.

[0003] The standard vises meet the requirements placed upon them. However, there are known applications where the operator must hold the workpiece with both hands, for example, if the workpiece is so heavy that one-handed holding is impossible. In such a case, it is not possible to operate the handle by hand. It is then necessary to involve a second person, which is time-consuming and reduces productivity.

[0004] Often, however, the worker tries to turn the lever with his thigh without assistance until the workpiece is clamped tightly between the two jaws. Only then can the worker operate the lever by hand and create the necessary high clamping force between the jaws. This is cumbersome and not without danger, as the worker has to stand on one leg with the workpiece in his hands.

[0005] To avoid this disadvantage, a retrofittable short-stroke module is known to the applicant (article number 197108). The module consists of a special spindle, a hydraulic module for the spindle head, a hydraulic hose, and a hydraulic foot pump with two pedals. One pedal is for locking, the other for releasing. The spindle can be rotated using the foot pedal without using the hands.

[0006] The described short-stroke module meets the requirements. However, it requires the installation of a new spindle. Furthermore, the module is not available for all vise models.

[0007] Against this background, the present invention aims to provide a device for handling workpieces in vises, which allows the handle to be operated with one hand regardless of the workpiece's weight. According to the invention, this objective is achieved by the features of claim 1.

[0008] The invention provides a device for placing workpieces on vises, which allows the handle to be operated with one hand, regardless of the workpiece's weight. This is achieved by the device providing a support on which the workpiece can be placed between the vise jaws. The operator thus has at least one hand available to rotate the handle, bringing the jaws together to clamp the workpiece. The support is formed by at least one support bolt, which is arranged in a guide of a support beam connected to the vise, in which the support bolt is slidably guided in the longitudinal direction of the vise. In this case, the longitudinal direction of the vise is parallel to the threaded spindle of the vise. This direction is orthogonal to the clamping surface of the jaws.orthogonal to a plane on which this spanning surface lies.

[0009] To ensure a flat surface for the workpiece, preferably two support supports with one support bolt each are provided, wherein the two support bolts are arranged to be slidable parallel to each other.

[0010] In a further development of the invention, the at least one support bolt is provided at one end with a support head having a flat surface. This ensures that a workpiece rests flat on the support bolt, thus increasing safety against falling off when the workpiece is not yet clamped.

[0011] In another embodiment of the invention, at least one support bolt is provided with a screw head at its end. The screw head allows the support bolt to be easily inserted into the guide. Furthermore, screwing on the screw head after the bolt has been positioned as intended prevents it from falling out of the guide.

[0012] Advantageously, a diameter widening is formed at the end facing away from the screw head. In conjunction with the screw head, this design ensures that the support bolt is captive within the guide.

[0013] In one embodiment of the invention, the at least one support bracket has two feet, which are provided with holes. This allows for reliable attachment to the vise, while simultaneously enabling the existing screws for fastening to the vise to be used for attachment to a workbench or the like. These screws are then inserted through the holes in the feet to fasten the support bracket.

[0014] The invention also relates to a vise with such a device for supporting a vise according to claim 6.

[0015] In a further development of the invention, the at least one support beam is formed by the front jaw and / or the rear jaw. This creates an integrated support beam, resulting in a compact design. Additional support beam arrangements are thus avoided. Preferably, two support bolts are arranged at a distance from each other and are slidable parallel to each other.

[0016] In one embodiment of the invention, the at least one support bolt is arranged in a guide formed by a bore in the front jaw or the rear jaw. The support bolt is displaceable in the guide in the longitudinal direction of the vise, i.e., in the direction of the opposite rear jaw or front jaw.

[0017] Other embodiments and configurations of the invention are specified in the remaining dependent claims. Exemplary embodiments of the invention are illustrated in the drawings and are described in detail below. The drawings show: Figure 1: the three-dimensional representation of a vise; Figure 2a: the three-dimensional representation of a support beam; Figure 2b: the right-hand side view of the vise. Figure 2 a) shown support beam; Figure 2 c) the view of the in Figure 2 a) depicted support beam; Figure 2 d) the section along line AA in Figure 2 b) Figure 3 a) the end view of a support bolt; Figure 3 b) the view of the in Figure 3 a) Figure 4 shows the support bolt shown; Figure 4 shows a section-by-section view of a vise with support bracket and support bolt; Figure 5 shows the section-by-section view of the in Figure 4Figure 6 shows a vise with a support bracket in a different position of the support bolts; Figure 6 shows a section-by-section view of a vise in a different embodiment; Figure 7 shows a section-by-section view of the vise in Figure 6 The depicted vise from a different perspective.

[0018] The vise chosen as an exemplary embodiment essentially consists of a fixed rear jaw 1 and a front jaw 2, which is slidably arranged relative to the rear jaw 1 along a guide (not shown). The rear jaw 1 and the front jaw 2 are connected to each other via a spindle 3 and serve to clamp a workpiece.

[0019] The rear jaw 1 is manufactured as a drop-forged part and essentially consists of a base body 11 to which a front jaw 12 is formed. At its lower end facing the floor, a base 13 is formed on the base body 11, which in the exemplary embodiment is provided with four holes 14 for fastening to a workbench, a welding table or the like.

[0020] The front jaw 2 is also designed as a drop-forged part. It is essentially formed from a base body 21 to which a front jaw 22 is formed.

[0021] The spindle 3 has a spindle head 31 at one end. The spindle head 31 is provided with a through bore 32, which is penetrated by a lever 4. At its end opposite the spindle head 31, the spindle 3 is provided with a thread (not shown).

[0022] Devices 5 for supporting workpieces can be attached to the vise. The devices comprise support bolts 51 which, when mounted on the vise, project at least partially into the space between the jaws 12, 22 in the longitudinal direction of the vise.

[0023] In the exemplary embodiment according to the Figures 3 to 5 The support bolts 51 are provided at one end with support heads 511. The support heads 511 have a round shape that is flattened along a secant. This creates a flat surface 512 on the support heads 511.

[0024] In the exemplary embodiment according to the Figures 6 and 7 The support bolts 51 are provided with a screw head 513 at one end. At the end opposite the screw head 513, a diameter extension 514 is formed in this embodiment, which prevents the support bolt 51 from slipping through.

[0025] Regardless of the design of the support bolts, the device according to the invention can be designed either directly on the vise or as an attachment in which a support bolt 51 is arranged.

[0026] In the exemplary embodiment according to the Figures 3 to 5The support bolts 51 are arranged in a support bracket 52 that can be attached to the vise. Each support bracket 52 is provided with two feet 521, which are provided with holes 522. When mounted, the holes 522 align with the bores 14 of the vise. The support brackets 52 can be fastened to the vise in this way using screws. The feet 521 form an arch 523 from which a cantilever 524 extends. At the free end of the cantilever 524, a tubular guide 525 is formed in which a support bolt 51 can be slidably arranged in the longitudinal direction of the vise. This design of the support brackets 52 allows for easy retrofitting of a vise.

[0027] The support bolts 51 are arranged according to the embodiment shown. Figures 4 and 5 arranged in the guides 525 such that the support heads 511 project into the area between the jaws of the vise. In Figure 4The flat surfaces 512 are positioned on the side facing away from the respective base 521 and pointing upwards. They thus form the support surface for a workpiece that is to be clamped in the vise.

[0028] Alternatively, the support bolt 51 can also be rotated 180° about its longitudinal axis in the guide 525, as shown in Figure 5 This is shown. In this installation position, the rounded side opposite surface 512 is oriented upwards. Although this results in point contact rather than surface contact, it nevertheless leads to an increase in the contact height, which can be advantageous under certain operating conditions.

[0029] In the exemplary embodiment according to the Figures 6 and 7The front jaw 1 and the rear jaw 2 each form a support beam. In this embodiment, the support bolts 51 are arranged in a guide 526, which is formed by a bore in the front jaw 1 and the rear jaw 2, respectively. The support bolts 51 visibly extend through the jaws 1 and 2 and thus project longitudinally into the area between the rear jaw 1 and the front jaw 2, where the workpiece is to be clamped. The support bolt 51 used in this embodiment visibly features the screw head 513 and the diameter extension 514. The arrangement of support bolts (51) in both jaws (1 and 2) enables the clamping of workpieces with considerable width or depth.

[0030] In this embodiment, the support bolt 51 is inserted into the respective guide 526 from the side facing the other jaw and provided with the thread for the screw head 513. The diameter widening 514 creates a stop. Due to its length, the support bolt 51 passes completely through the respective jaw, so that the thread protrudes from the jaw. The screw head 513 is then screwed onto the thread, thereby positioning the support bolt 51 captive in the guide 526. Nevertheless, the support bolt 51 is axially displaceable within the guide 526.

[0031] Regardless of the version chosen for using the workpiece support device, the principle of operation is the same: The support bolts 51 are positioned in the guides 525 or 526 such that they project longitudinally into the space between the jaws 12 and 22 of the vise, i.e., perpendicular to them. The workpiece to be clamped can then be placed on the support bolts 51. At least three support bolts 51 are required to ensure stable support.

[0032] After placing the workpiece, the operator has one hand free and can operate the spindle 3 in the usual manner using the lever 4, so that the jaws 1 and 2 move towards each other until the workpiece comes into contact with both end jaws 12 and 22, thus clamping it in place. Machining of the workpiece can then begin, with the support bolts 51 either remaining in their position or being pushed back. The diameter extension 514 and the support head 511 prevent the workpiece from falling out of the guides 525, 526.

[0033] The invention provides a device for placing workpieces on vises, which also offers the possibility of operating the lever with one hand when clamping workpieces of high weight, because the workpiece can be placed on the support bolt 51.

Claims

1. Device for supporting a workpiece between the jaws of a vise, characterized by the fact that at least one support bolt (51) is provided which is arranged in a guide (525) of a support beam (52) to be connected to the vise, in which the support bolt (51) is arranged to be displaceable in the longitudinal direction of the vise when the support beam (52) is mounted.

2. Device according to claim 1, characterized by the fact that which has at least one support bolt (51) at one end provided with a support head (511) which has a flat surface (512).

3. Device according to claim 1 or 2, characterized by the fact that which has at least one support bolt (51) at its end provided with a screw head (513).

4. Device according to claim 3, characterized by the fact that A diameter extension (514) is formed at the end facing away from the screw head (513).

5. Device according to one of the aforementioned claims, characterized by the fact thatwhich has at least one support support (52) and two feet (521) which are provided with holes (522), preferably having two support supports (52).

6. Vise with a front jaw (1) and a rear jaw (2), comprising a device according to one of the preceding claims.

7. Vise according to claim 6, characterized by the fact that which at least one support carrier (52) is formed by the front jaw (1) and / or the rear jaw (2).

8. Vise according to claim 6 or 7, characterized by the fact that in which at least one support bolt (51) is arranged in a guide (526) formed by a bore in the front jaw (1) and the rear jaw (2).

9. Vise according to one of claims 6 to 8, characterized by the fact that Two support bolts are arranged at a distance from each other and are movable parallel to each other.

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