EP0389604A1

EP0389604A1 - Clamping device

Info

Publication number: EP0389604A1
Application number: EP89910441A
Authority: EP
Inventors: Horst Klimach
Original assignee: Bessey and Sohn GmbH and Co KG
Current assignee: Bessey and Sohn GmbH and Co KG
Priority date: 1988-09-15
Filing date: 1989-09-15
Publication date: 1990-10-03
Also published as: US5172895A; DE3831375A1; EP0363674A3; WO1990002633A2; EP0363674A2; WO1990002633A3

Abstract

Un dispositif de serrage comprend des premier et deuxième jougs de serrage (36, 38) réglables l'un par rapport à l'autre sur un plan de déplacement. Le premier joug de serrage (36) comprend deux mors de base (82) ayant chacun une première face angulaire de serrage, lesquelles forment entre elles un angle alpha1 inférieur à 180° et sont perpendiculaires au plan de déplacement (58). Ces faces angulaires de serrage forment une première cavité de réception d'une pièce à usiner, cette cavité de réception ayant une forme prismatique ouverte vers les mors de base du deuxième joug de serrage. Une broche parallèle (42) au plan de déplacement sert à régler les jougs de serrage l'un par rapport à l'autre. Afin d'améliorer un tel dispositif de serrage, de sorte qu'il puisse être utilisé pour exécuter un nombre aussi grand que possible de tâches de serrage requises dans un atelier usuel, un premier mors supplémentaire (104) peut être inséré dans le premier joug de serrage. Le mors supplémentaire de serrage comprend une face plate de serrage qui fait face aux mors de base du deuxième joug de serrage et est plus rapprochée du deuxième joug que les premières faces angulaires de serrage.A clamping device includes first and second clamping yokes (36, 38) adjustable relative to each other in a plane of motion. The first clamping yoke (36) comprises two base jaws (82) each having a first angular clamping face, which form between them an angle alpha1 less than 180° and are perpendicular to the plane of movement (58). These angular clamping faces form a first cavity for receiving a workpiece, this receiving cavity having a prismatic shape open towards the base jaws of the second clamping yoke. A spindle parallel (42) to the plane of motion serves to adjust the clamping yokes relative to each other. In order to improve such a clamping device so that it can be used to perform as many of the clamping tasks required in a typical workshop as possible, an additional first jaw (104) can be inserted into the first yoke Clamping. The additional clamping jaw includes a flat clamping face which faces the base jaws of the second clamping yoke and is closer to the second yoke than the first angular clamping faces.

Description

Clamping device

The invention relates to a clamping device with a first and a second clamping yoke which is adjustable relative to one another in a plane of movement, the first clamping yoke carrying two base jaws, each with a first angular clamping surface, which is relative to the other first angular clamping surface at an angle of α1 <180 ° and perpendicular to Movement plane is arranged so that the. first angular clamping surfaces, a first prismatic one that is open towards the base jaw of the second clamping yoke

Form workpiece holder and with a spindle running parallel to the plane of movement for adjusting the clamping yokes relative to one another.

Such clamping devices are known for example from DE-PS 32 44 022 as so-called angle clamps. The disadvantage of these angle clamps is that they are only suitable for clamping angles, but are not suitable for other clamping tasks that occur, for example, in a mechanical workshop.

The invention is therefore based on the object to verbes a tensioning device of the type described in the introduction sem that this is suitable for the largest possible number of clamping tasks occurring in a conventional workshop.

This object is achieved according to the invention in a clamping device of the type described in the introduction in that a first additional jaw can be inserted into the first clamping yoke, which has a first flash clamping surface facing the base jaws of the second clamping yoke and closer to it than the first angular clamping surfaces. The essence of the invention is thus to be seen in the fact that the interchangeable additional jaws

first clamping yoke with its angular clamping surfaces can be converted for parallel clamping, so that, for example, all possible flat clamping tasks can now be carried out on this first flat clamping surface.

It has proven particularly expedient if the base jaws of the first clamping yoke are arranged at a distance from one another, so that the first angular clamping surfaces end at a distance from one another and form a passage opening on a side of the workpiece holder facing away from the second clamping yoke.

In a particularly preferred manner, two parts can thus be clamped at an angle α ₁ relative to one another in the first clamping yoke. In particular for strip-shaped parts, it has proven to be advantageous if the base jaws of the first clamping yoke have boundary surfaces facing away from the second clamping yoke, which enclose an angle of 180 ° - α ₁ with the respective first angular clamping surfaces and are perpendicular to the plane of movement.

In the exemplary embodiments of the solution according to the invention described so far, no statement has been made regarding the design of the second clamping yoke. For the core of the Erfin This is not absolutely necessary because irrespective of the design of the second clamping yoke due to the design of the first clamping yoke with the base jaws and the first additional jaw, both clamping round parts, clamping two parts aligned at an angle α ₁ to one another and with the help of Parallel baking is possible. Within the scope of the solution according to the invention, it would therefore be conceivable if a flat clamping surface can be provided on the second clamping yoke, which can be arranged directly on the clamping yoke or on an insertable additional jaw.

However, it has proven to be advantageous if the second clamping yoke carries two base jaws, each with a second angular clamping surface, which is at an angle of α ₂ <180 ° relative to the other second angular clamping surface and perpendicular to it

Plane of movement is arranged so that the second angular clamping surfaces form a prismatic second workpiece holder which is open towards the base jaw of the first clamping yoke.

In such an embodiment, large cylindrical or other shaped parts can be clamped in the vertical direction particularly advantageously only using the base jaws with the first and second angular clamping surfaces.

For angular clamping, it has also proven expedient if a second additional jaw can be inserted into the second clamping yoke, which is the same as the first additional jaw

first clamping yoke and closer to it than the second angular clamping surfaces.

Furthermore, it is advantageous if the base jaws of the second clamping yoke are arranged at a distance from one another, so that the second angle surfaces are at a distance. from each other that and form a passage opening on a side facing away from the first clamping yoke of the workpiece holder.

In the same manner as the first clamping yoke, it is also advantageous if the base jaws of the second Spannjochs have the first clamping yoke facing away limiting surfaces forming an angle of 180 ° with the respective second angular clamping surfaces - α include ₂ and are perpendicular to the boundary plane.

In the exemplary embodiments described so far, the only emphasis was placed on the fact that the additional jaws can be inserted into the respective clamping yoke, it not being specified how this should be carried out particularly expediently. In order to achieve good support for the additional jaws, it is advantageous if both the first and the second additional jaws are supported on the respective angular clamping surfaces.

In addition, an advantageous embodiment provides that each of the additional jaws is held in a form-fitting manner in the first clamping yoke, so that the latter has a defined position.

Since both in the first and in the second clamping yoke the base jaws have to be so stable that the necessary clamping forces can be applied with them, it is particularly expedient if each of the additional jaws grips the base jaws of the clamping yoke in a form-fitting manner, since the simplest form-fitting fixation is thus achieved leaves. In particular, this means that the additional jaw lies in a form-fitting manner on the angular clamping surfaces and the boundary surfaces.

With the exemplary embodiments described so far, it is possible to clamp cylindrical parts and, to a limited extent, parts arranged at an angle to one another. However, it is particularly expedient if an additional angle jaw can be inserted into the second clamping yoke, which cooperates with the first angular clamping surfaces for angular clamping. The angular clamping jaw preferably has two at an angle of

360 ° - α ₁ arranged third angular clamping surface, which can be adjusted by adjusting the clamping yokes to the first angular clamping surfaces. The same clamping tasks as in the known angle clamp can thus be solved with such an additional angle jaw.

Within the scope of the present invention, it is also conceivable to insert an additional angle jaw into the first clamping yoke, which in turn then has, for example, third clamping surfaces with an angle of 360 ° - α ₂ , which is particularly expedient if the angles (α ₁ and α ₂ are of different sizes, so that due to the different angles α ₁ and α ₂ angular clamping tasks with different angles α ₁ and α ₂ can be solved and thus the clamping device, depending on which base jaws are used, comprises two angle clamps with different angles.

With the additional angle jaws, too, it has proven to be expedient if it is held in a form-fitting manner on the second clamping yoke. For reasons of stability, it is particularly expedient if the additional angle jaw is supported on the base jaws of the second clamping yoke.

In order to also obtain a particularly stable connection, it is provided that the angled additional jaws form-fitly encompass the base jaws of the second clamping yoke, this taking place in particular by the fact that the angled additional jaws form-fitly abut the angular clamping surfaces and the boundary surfaces of the base jaws of the second clamping yoke.

With all form-fitting additional jaws, i.e. also the additional angle jaws, it is useful if these can be fixed by holding elements.

In the present invention, it has proved to be particularly advantageous if the angle α is ₁ 90 °, so that an angle margins at a right angle is possible with the first clamping yoke and its base jaws, as this is the angle clamping task usually required.

Likewise, it is also advantageous for the angle α ₂ if this is 90 °, in order to be able to carry out an angular clamping here at a right angle. However, it is also within the scope of the invention to design the angle α ₂ as an alternative to the angle α _1, for example with 60 °.

In order to be able to interchange the additional jaws provided for the first or second clamping yoke, it is provided see that the base jaws of the first and second clamping yokes are identical, so that also on this

form-fitting first and second additional jaws and the additional angle jaws can be placed either on the first or on the second clamping yoke.

In order to be able to carry out parallel clamping in particular with the flat clamping surfaces, it has proven to be expedient if a relative movement of the clamping yokes can be limited to one direction by means of a parallel guide element which can also be connected to them. This parallel guide element is preferably a guide rod which can be inserted into a respective guide bore in each clamping yoke and thereby guides the clamping yokes parallel to one another.

The parallel guide element must be aligned parallel to the spindle to allow the clamping yokes to be adjusted. It is particularly expedient if the parallel guide element can be fixed on a clamping yoke.

In a further advantageous embodiment of the tensioning device according to the invention it is provided that between the

Clamping yokes is arranged on two parallel guide elements freely movable, double-sided flat clamping surfaces having center jaws, through which two parts can be clamped simultaneously between this and a clamping yoke.

In principle, it would be possible to design the clamping device according to the invention so that the spindle shifts both clamping yokes. However, it is particularly easy if

the spindle is rotatable about its axis on the first clamping yoke, but is held immovably in the axial direction thereof. This then allows the spindle to protrude beyond the first clamping yoke on a side opposite the second clamping yoke and to carry an actuating element, in particular a rotary toggle.

In such an embodiment, the second clamping yoke on a spindle nut is expedient

Spindle held.

In order to make it possible in the clamping device according to the invention to also clamp wedge-shaped tools with the flat clamping surfaces, it is advantageous if the spindle is held on the first clamping yoke so as to be pivotable about an axis perpendicular to the plane of movement.

In order to also be able to solve angular clamping tasks in which strip-shaped workpieces of different thickness are to be clamped at an angle to one another, it has proven to be expedient if the second clamping yoke on the spindle is about an axis perpendicular to the axis of movement

is pivoted.

In the exemplary embodiments described so far, it has not been discussed in detail how the two clamping yokes should be fixed. In an advantageous embodiment it is therefore provided that the first clamping yoke is firmly connected to a base body, so that only the second clamping yoke is movable relative to the base body. Guides could be provided on the base body for the second clamping yoke.

However, in order to provide this second clamping yoke with free mobility, it is expedient if the base body has a sliding plate for the second clamping yoke, on which the sliding yoke can slide and move freely on the movement plane.

So that long workpieces in the vertical direction, i.e. transversely to the plane of movement, it has proven to be expedient if the first clamping yoke is held on an arm extending from the base body. With such a solution, workpieces can be clamped in the vertical direction particularly favorably if the arm between the clamping yokes extends laterally from the spindle in only one direction, so that the workpiece can reach the spindle in the other direction.

A particularly advantageous embodiment provides that the base body has a guide for an end piece of the spindle facing away from the first clamping yoke. This can ensure an additional increase in the stability of the two clamping yokes, particularly in the case of heavy loads.

The simplest design solution can be achieved in that the guide is formed by a guide slot in a guide body comprising the base body and into which the end piece is immersed. The guide can basically be designed so that it guides the end piece of the spindle in opposite directions to one another. If, however, it is provided that the second clamping yoke should slide on a sliding plate, it is sufficient if the guide prevents the spindle from moving away from the sliding plate. secures so that the spindle cannot move away from the slide plate when clamping with great forces.

In particular, in an embodiment in which the spindle is to be pivotable relative to the clamping yokes, it is expediently provided that the guide permits a pivoting movement of the spindle, preferably a pivoting movement about the pivot axis of the spindle in the first clamping yoke being permitted.

In a further preferred exemplary embodiment it is provided that the base body has compartments which are used as storage, for example for the additional jaws and the

Additional angle jaws can serve. For this purpose, the base body is expediently box-shaped in the area of a workbench attachment. A drawer can expediently be pushed into the base body.

In addition, all known clamping devices have the problem of catching falling parts, for example also chips. This problem can be eliminated within the scope of the solution according to the invention by providing a collecting tray that can be positioned in the area between the clamping yokes and below this. This collecting tray can then advantageously be used Push it into the box-shaped base body, for example into a compartment of the same, when it is no longer required.

The versatility of the tensioning device according to the invention is further improved in that the base body has fastening devices for additional units. The fastening devices are advantageously recesses in the base body which can be used in the various additional units. In particular, in order to be able to carry out sawing work at different miter angles, it is advantageous if a saw guide that can be inserted into a fastening device is provided, which comprises a vertical guide for a saw that runs perpendicular to the plane of movement.

For this purpose, a horizontal guide is advantageously provided on the vertical guide, in which the saw is guided so as to be displaceable in the sawing direction.

Furthermore, the versatility of the tensioning device according to the invention can be further improved in that the base body has an anvil. This anvil is advantageously on one opposite the first clamping yoke

Arranged side of the base body, or two anvils are arranged laterally on opposite sides of the base body. In addition, it is also expedient if the anvil has bent or flanged edges.

Further features and advantages of the invention are the subject of the following description and the drawing of an exemplary embodiment. The drawing shows: 1 shows an overall perspective view of a first exemplary embodiment;

2 is a plan view of the embodiment of FIG. 1 ;

Fig. 3 is a section along line 3-3 in Fig. 2;

Fig. 4 is a section along line 4-4 in Fig. 2;

5 shows a plan view of the exemplary embodiment provided with first and second additional jaws;

6 shows a plan view of the first additional jaws;

7 is a side view of the first additional jaw;

8 shows a plan view of the exemplary embodiment provided with an angular clamping jaw;

9 shows a plan view of the angular clamping jaws;

10 shows a side view of the angular clamping jaw;

11 shows a plan view of the first exemplary embodiment with first and second additional jaws and a middle jaw;

12 shows a perspective partial view of the first exemplary embodiment with a saw guide.

13 shows a section along line 13-13 in FIG. 12.

Fig. 14 is an overall perspective view of a second

Embodiment and

15 shows a partial section along line 15-15 in FIG. 14. An embodiment of the tensioning device according to the invention, shown in Fig. 1, comprises a box-shaped base body 10 which can be placed with a lower contact surface 12 on a table 14 or a similar base. A front stop bar 16 is formed on this box-shaped base body 10, which protrudes downwards at right angles to the support surface 12 and for fixing to a front edge 18 of the table. 14 serves. Furthermore, fastening tabs 20 with an elongated hole 22 are formed on the base body 10 in an area facing away from the stop bar 16.

The stop bar 16 is formed as part of a front side 24 of the box-shaped base body 10, via which, as can also be seen in particular in FIG. 4, an arm 26 comprising a vertical central web 28 and two T-shaped cross webs 30 and 32 on both sides of it , protrudes forward.

A first clamping yoke 36 is fixedly mounted on a front end 34 of this arm 26, while a second clamping yoke 38 is displaceable on a slide plate 40 of the base body 10 opposite the support 12. This slide plate 40 forms an upper end of the box-shaped base body 10 and merges into the transverse web 30 of the arm 26, so that it extends to the first clamping yoke 36.

To move the second clamping yoke 38 on the sliding plate 40 is a spindle which passes through both clamping yokes 36, 38 42 provided. 2 and 3, the spindle 42 is provided in the region of its front end with a thread-free section 44 which is rotatably held in a spindle bearing block 46. The thread-free section 44 is delimited on both sides by annular disks 43, which each abut end faces 50 of the spindle bearing block 46, so that the spindle 42 is held immovably in the direction of its longitudinal axis 52 in the spindle bearing block 46, but can be rotated about the longitudinal axis 52.

The spindle bearing block 46 is in turn provided with opposing pins 54 which are arranged coaxially with a first pivot axis 56, the first

Pivot axis 56 is perpendicular to a movement plane 58 of the second clamping yoke 38 defined by the sliding plate 40.

The spindle bearing block 46 is received in the first clamping yoke 36 in an opening 60 passing through it, which opening is transverse to the first pivot axis 56 and wider than that

Spindle bearing block 46 is so that the spindle bearing block

is pivotable about the first pivot axis 56. The pivotable mounting of the spindle bearing block 46 takes place through the pins 54 engaging in bores 62 of the first clamping yoke 36. In order to achieve optimal pivoting possibilities of the spindle bearing block 46, the opening widens in the direction of the longitudinal axis 52 of the spindle 42 starting from the

Holes 62 each outward.

Following the thread-free section 44, the spindle 42 is in its extending over the sliding plate 40 Area provided with a threaded portion 64 which carries a spindle nut 66. The spindle nut 66 is designed similarly to the spindle bearing block 46 and is also arranged in an opening 63 of the second clamping yoke 38 and is provided with pins 70 which also extend into bores 72 of the second clamping yoke 38 and thereby the spindle nut 66 in turn about a second pivot axis 74. which is also perpendicular to the plane of movement 58, pivotally mounted on the second yoke 38. The opening 68, like the opening 60, is designed such that, starting from the bores 72, it widens outwards in order to allow the spindle nut 66 to pivot sufficiently.

Both the first clamping yoke 36 and the second clamping yoke 38 each comprise a base block 76 or 78, although the base block 76 of the first clamping yoke 36 is screwed onto the front end 34 of the arm 26, while the second base block 78 faces one of the sliding plate 40 Has sliding surface 80 with which it is supported on the sliding plate 40. Two base jaws 82 and 84, which are arranged symmetrically to the respective pivot axis 56 and 74, rise from the respective base block 76 and 78, each of the base jaws 82 having a first angular clamping surface 86 and each of the base jaws 84 having a second angular clamping surface 88. The two first angular clamping surfaces 86 of the base jaws 82, as can be seen in FIG. 2, are arranged relative to one another at an angle α = 90 ° and form one with the second clamping yoke 38 opening prismatic receptacle for a workpiece 90, which can be, for example, a round cylinder. Likewise, the second angular clamping surfaces 88 of the two base jaws 84 are also arranged at an angle of α = 90 ° relative to one another and likewise form a prismatic receptacle for the workpiece 90 that is open toward the first clamping yoke 36.

The two base jaws 82 and 84 do not touch with their first angular clamping surfaces 86 or 88, but these are arranged at a distance from one another with their inner side edges 92 and 94, so that there is a passage opening 96 between the two base jaws 82 and 84, respectively or 98, limited by the inner side boxes 92 and 94, remains.

These inner side edges 92 and 94 are adjoined by rear boundary surfaces 100 and 102 on a side opposite the other clamping yokes 38 and 36, which with the first angular clamping surfaces 86 and the second angular clamping surfaces 88 form an angle of 180 ° minus α, ie also include 90 °. Both the first angular clamping surfaces 86 and the associated boundary surfaces 100 and also the second angular clamping surfaces 88 with the associated boundary surfaces 102 are each perpendicular to the movement plane 58.

A first additional jaw 104 can be placed on the first clamping yoke 36 and has a support body 106 which engages between the two base jaws 82. The support body 106 lies with support surfaces 108 on the first angular clamping surfaces 86 and engages behind the base jaws 82 by means of the support surfaces 110 lying against the boundary surfaces 100, so that the support body 106 is positively received between the two base jaws 82 and can be lifted upwards perpendicular to the plane of movement 58. Furthermore, the first additional jaw 104 is provided with a flat clamping jaw 112 held on the support body 106 and carrying a flat clamping surface 114. The flat clamping jaw 112 is held on the area of the support body 106 which supports the support surfaces 108 and is arranged such that when the first additional jaw 104 is inserted into the first clamping yoke 36, its flat clamping surface 114 points in the direction of the second clamping yoke 38, the flat clamping surface being perpendicular to the Plane of movement 58 stands and preferably with the two support surfaces 108 arranged on opposite sides of the support body 106

Includes angle.

In the same way, a second additional jaw 116 is formed, which can be placed on the second clamping yoke 38

and also has a support body 118 with support surfaces 120 and holding surfaces 122, so that it also from

can be placed on top of the second clamping yoke 38 and is held positively by the base jaws 84. Furthermore, a flat clamping jaw 124 with a flat clamping surface 126 is additionally provided in the same way as for the first additional jaw 104. With this first and the second additional jaws 104 and 116, the clamping device according to the invention is as usual Licher vice built however with the additional advantages that the spindle 40 is articulated both on the first clamping yoke 36 and on the second clamping yoke 38, so that wedge-shaped parts can also be clamped over a parallel clamping.

Instead of the first additional jaw 104 or the second additional jaw 108, an angle additional jaw 128 can also be inserted into the respective clamping yoke 36 or 38, as shown in FIGS. 8 to 10. In Fig. 8 this angle additive bake 128 is inserted into the second clamping yoke 38. This additional angular jaws 128 also comprises a support body 130, which by means of support surfaces 132 and holding surfaces 134 engages in a form-fitting manner on the second angular clamping surfaces 88 and the boundary surfaces 102 in the same way as in the first or second additional jaws 104 and 116 and can be removed upwards. In contrast to the first or second additional jaws 104 or 116, the angled additional jaw carries an angled clamping jaw 136 projecting in the direction of the first clamping yoke 36 with one on the first

Clamp yoke 36 to be pointed, to which third angular clamping surfaces 140 adjoin on both sides, which in turn are arranged at an angle of α = 360 ° minus β relative to one another.

When working with such an additional angular jaw 128 in the second clamping yoke 38, the first clamping yoke 36 is operated without additional jaws, so that the angular clamping jaw 136 protrudes into the prism-shaped receptacle, formed by the first angular clamping surfaces 86, and so for example is able to clamp two strip-shaped workpieces 142 and 144 at an angle relative to one another, as shown in FIG. 8. If the strip-shaped workpieces 142 and 144 have different thicknesses, this is compensated for by the fact that the spindle 42 can be pivoted relative to the two clamping yokes 36 and 38 and thus the second clamping yoke 38 is fed to the latter in a laterally displaced position relative to the first the second clamping yoke 38 can slide with the sliding surface 80 on the sliding plate 40 both in the direction of the longitudinal axis 52 of the spindle 42 and transversely thereto.

In order to be able to carry out an exact parallel clamping with the embodiment of the clamping device according to the invention according to FIG. 5, provided with the first additional jaw 104 and the second additional jaw 116, the two are

Clamping yokes 36 and 38 can be fixed relative to one another in an initial position such that their flat clamping surfaces 114 and 126 are parallel to one another and preferably also the longitudinal axis 52 of the spindle runs parallel to the plane of movement 58 and perpendicular to the flat clamping surfaces 114 and 126. This fixation is preferably carried out by two guide rods 146 and 148, which penetrate both the first clamping yoke 36 and the second clamping yoke 38 in guide bores 150 and 152 on both sides of the spindle 42 parallel to its longitudinal axis 52, so that the second clamping yoke 38 passes through these guide rods 146 or 148 slides exactly parallel to the first clamping yoke 36 on the sliding plate 40. These guide rods 146, 148 can be removed, so that, for example, angular clamping according to FIG. 8 can be carried out without them.

To duplicate the flexibility of the tensioning device according to the invention, parallel tensioning with the first and second additional jaws using the guide rods 146 and 148, a middle jaw 154 can be used, which is slidably guided on the guide rods 146 and 148 and has two flat clamping surfaces 156 and 158, which are aligned parallel to the flat clamping surfaces 114 and 126. The middle jaw 154 is freely movable between the first clamping yoke 36 and the second clamping yoke 38, so that both between the flat clamping surface 114 and the

Flat clamping surface 156 and the flat clamping surface 158 and the flat clamping surface 126 two different parts can be clamped simultaneously.

Furthermore, in order to be able to carry out flat clamping of parts extending perpendicular to the plane of movement 58, in particular at least without using the guide rod 148, the transverse webs 30 and 32, as shown in particular in FIGS. 4 and 5, are designed asymmetrically relative to the central web 28 4 so that they extend to the right in FIG. 4 only substantially to the left, but only to a small extent approximately as far as an outer circumference of the spindle 42, so that to the right of the spindle 42 such a workpiece is not obstructed by the transverse webs 30 or 32 can be cocked.

Rotation of the spindle 42 takes place in the well-known manner by means of a lever 160 which is slidably mounted in a bore 162 of an end piece 164 of the spindle, the

End piece 164 protrudes forward over the first clamping yoke 36 and thus connects to the thread-free section 44, opposite the threaded section 64. The box-shaped base body 10 is additionally provided with two compartments 166, 168, which are accessible through front openings 170 and 172 in the front 24 of the base body 10. The compartments 166, 16.8 can serve, for example, to hold the first and second additional jaws 104, 116 or also the additional angle jaw 128. In addition, in the compartment 168 there is also a pull-out tray 174 which is extendable, the upper edge of which lies below the plane of movement 58 and can thus be pulled out to such an extent that it engages under a recess 176 delimited by the slide plate 40, the crosspiece 30 and the front end 34 and thereby, for example, all chips or other parts occurring in the area between the clamping yokes 36, 38. The drip tray 174 is preferably mounted in a frame with drawer-like guides, such as pull-out rails.

As an addition to the base body 10 is the front

End 34 opposite anvil 176 formed with heap and heap. Furthermore, there are 10 side bodies 178 on both sides of the base body, which

Have receiving bores 180 for auxiliary units running perpendicular to the plane of movement 58. As shown in FIG. 12, vertical guides 182 can be inserted into these receiving bores, for example, which have a cylindrical end piece 184 which can be inserted into the receiving bore 180 and which is supported by an annular collar 186 on an upper edge of the receiving bore 180. A square guide 188 extends upward from the ring collar 186, on which a saw guide 190 is displaceable in the vertical direction and through a

Set screw 192 can be fixed. Saw guide 190 includes a guide block 194 encompassing the square guide 188 on all sides, on which a U-shaped receptacle 198 is mounted so as to be pivotable about a horizontal axis 196. In this U-shaped receptacle 198, for example, a saw 202 having a rectangular tube 200 is slidably mounted, which is guided through the U-shaped receptacle 198 in such a way that a saw blade 204 of the saw 202 is aligned vertically.

In order to be able to determine a miter angle of the saw blade 204 relative to a workpiece clamped between the clamping yokes 36 and 38, the entire vertical guide 182 can be rotated in the receiving bore 180 and can be fixed in its rotated position, for example, by means of an adjusting screw 206, the adjusting screw 206 on the end piece 184 works.

In order to prevent the saw 202 from falling out of the U-shaped receptacle 198, this is still by a plug pin

208 closable, which is arranged so that the rectangular tube 200 is movable in its longitudinal direction in the receptacle 198, but cannot leave it on its open side.

As an alternative to receiving the saw 202, the vertical guides 182 according to the invention can also be used to guide scribing aids for receiving bridges or also as supports for lamps.

In a particularly preferred embodiment of the square guide 182 according to the invention, the end piece 184

provided with locking recesses 210, which have the same angular distances from one another in all quadrants, but be in each quadrant with a different starting angle are introduced into the end piece 184. For example, 90 °, 60 ° and 30 ° holes are provided in one quadrant, 75 °, 45 ° and 15 ° holes in the opposite one and 7.5 ° and 37.5 ° holes in the intermediate quadrant (Fig. 13 ).

As shown additionally in FIG. 11, the support bodies 106 and 118 can be fixed to the clamping yokes 36 and 38 by screws 212. Alternatively, the screws 212 can also be designed as locking elements.

In a second exemplary embodiment, shown in FIGS. 14 and 15, insofar as the same parts are used, they are provided with the same reference numerals, so that reference can be made to the explanations for the first exemplary embodiment in this regard.

In contrast to the first exemplary embodiment, the base body 10 comprises two side bodies 220, which are arranged on both sides of a central body 222 and are flush with their front sides 224 with the front side 24 of the central body 222. At a distance from these side bodies on a side opposite the arm 26, two anvil bodies 226 are arranged on the side of the center body 222, which rise above the movement plane 58 and enclose the movement plane 58 in the rear region of the center body 222. Each of the anvil bodies 226 is provided with an anvil surface 228 which is substantially parallel to the movement plane 58. Extending between these anvil bodies 226 is a guide body 230, which has a guide slot 232 open towards the second clamping yoke, into which the spindle 42 extends with a rear end piece 234 opposite the shaft piece 164 and one with this end piece 234 in the guide slot 232 Leadership experiences. For this purpose, the end piece 234 of the spindle 42 is provided with a cylindrical thread-free shoulder 236 which is rotatably mounted in a slide piece 238. This slider 238 is thereby held immovably by the end piece 234, so that an annular flange 240 connects to the cylindrical extension 236 at the transition to the threaded portion 64 and a securing ring 242 is seated on the opposite side of the extension 236.

This slide piece 238 has on its upper side opposite the slide surface 58 a contact surface 244 which slidably rests on a guide surface 246 of the guide body 230.

Due to the rotatable mounting of the cylindrical projection 236 in the slide 238, the spindle 42 can be rotated without the slide 238 also rotating.

The guide slot 232 is formed so that it represents a segment of a circular arc concentric to the pivot axis 56 of the pin 54 and parallel to the plane of movement 58, so that with all pivoting movements of the spindle 42 about the pivot axis 56, the slider 238 with the contact surface 244 along the likewise can run along an arcuate guide surface 246. The guide surface 246 additionally secures the spindle 42 against lifting off in the direction perpendicular to the movement plane 58. There is no need to secure the spindle 42 against movement in the direction of the movement plane 58, since the clamping yoke 38 directly rests on the movement plane 58 and thus prevents such movement of the spindle.

In order to be able to receive the end piece 234 in a simple manner, the guide body 234 is preferably hollow, and in the simplest case is integrally formed on the middle body 222. In addition, a drawer 250 is provided in the central body 222 instead of the drip tray 174, which can be pulled out of the central body 222 to the rear in the direction of the arrow 252.

The base body 10 is preferably attached by means of attachment tabs 254 which extend to the side of the central body 222 between the respective side body 220 and the respective anvil body 226 and preferably have an elongated hole 256 for attachment.

Claims

Patent claims

1. clamping device with a first and a second in

a movement plane adjustable relative to each other, the first clamping yoke carrying two base jaws, each with a first angular clamping surface, which is relative to the other first angular clamping surface at an angle of α ₁ <180 °. and is arranged perpendicular to the plane of movement, so that the first angular clamping surfaces form a prismatic first workpiece holder which is open towards a base jaw of the second clamping yoke and which has a parallel to the plane of movement. Spindle for adjusting the clamping yokes relative to each other,

characterized in that a first additional jaw (104) can be inserted into the first clamping yoke (36) and has a first flat clamping surface (114) facing the base jaw (84) of the second clamping yoke (38) and closer to it than the first angular clamping surfaces (86) .

2. Clamping device according to claim 1, characterized in that the base jaws (82) of the first clamping yoke (36) are arranged at a distance from one another, so that the first angular clamping surfaces (86) end at a distance from one another and form a passage opening (96) on a side of the workpiece holder facing away from the second clamping yoke (38).

3. Clamping device according to claim 2, characterized in

that the base jaws (82) of the first clamping yoke (36) have boundary surfaces (100) facing away from the second clamping yoke (38), which enclose an angle of 180 - α ₁ with the respective first angular clamping surfaces (86)

and stand perpendicular to the plane of movement (58).

4. Clamping device according to one of claims 1 to 3, characterized in that a flat clamping surface can be provided on the second clamping jaw.

5. Clamping device according to one of the preceding claims,

characterized in that the second clamping yoke (38)

carries two base jaws (84), each with a second angular clamping surface (88), which is relative to the other second

Angular clamping surface (88) is arranged at an angle of α ₂ <180 ° and perpendicular to the plane of movement (58), so that the second angular clamping surfaces (88) form a prismatic second workpiece holder which is open towards the base jaws (82) of the first clamping yoke (36) .

6. Clamping device according to claim 5, characterized in

that in the second clamping yoke (38) a second additional jaw (116) can be inserted, which faces the first additional jaw (104) of the first clamping yoke (36) and this

has a second flat clamping surface (126) closer than the second angular clamping surfaces (88).

7. Clamping device according to claim 5 or 6, characterized in that the base jaws (84) of the second clamping yoke (38) are arranged at a distance from one another so that the second angular clamping surfaces (88) end at a distance from one another and form a passage opening (98) on a side of the workpiece holder facing away from the first clamping yoke (38).

8. Clamping device according to claim 7, characterized in that the base jaws (84) of the second clamping yoke (38) have the first clamping yoke (36) facing away from boundary surfaces (102) which with the respective second angular clamping surfaces (88) an angle of

Include 180 ° - α ₂ and stand vertically on the plane of movement (58).

9. Clamping device according to one of the preceding claims, characterized in that in the second clamping yoke (38) an additional angle jaw (128) can be used, which cooperates with the first angle clamping surfaces (86) for angular clamping.

10. Clamping device according to claim 9, characterized in that the additional angular jaws (128) have two at an angle of 360 ° - α ₁ to each other third angular clamping surfaces (140), which in turn by adjusting the clamping yokes (36, 38) to the first Angular clamping surfaces (86) are deliverable.

11. Clamping device according to one of the preceding claims, characterized in that the additional jaws (104, 116) and / or the additional angle jaws (128) themselves Support on the angular clamping surfaces (86, 88) of the respective clamping yoke (36, 38).

12. Clamping device according to claim 11, characterized in that the additional jaws (104, 116) and / or the additional angle jaws (128) are positively held on the respective clamping yoke (36, 38).

13. Clamping device according to claim 12, characterized in that the additional jaws (104, 116) and / or the additional angle jaws (128) form-fit the base jaws (82, 84) of the respective clamping yoke (36, 38).

14. Clamping device according to claim 13, characterized in that the additional jaws (104, 116) and / or the additional angle jaws (128) on the angle clamping surfaces (86, 88) and the boundary surfaces (100, 102) of the base jaws (82, 84) of the of the respective clamping yokes (36, 38).

15. Clamping device according to one of claims 4 to 14, characterized in that the base jaws (82, 84) of the first and second clamping yoke (36, 38) are of identical design.

16. Clamping device according to one of the preceding claims, characterized in that a relative movement of the clamping yokes (36, 38) can be limited in one direction by a parallel guide element (146, 148) which can additionally be connected to them

17. Clamping device according to claim 16, characterized in that the parallel guide element is a guide rod (146, 148) which can be inserted into a respective guide bore (150, 152) in each clamping yoke (36, 38).

18. Clamping device according to claim 16 or 17, characterized in that between the clamping yokes (36, 38) on two parallel guide elements (146, 148) freely displaceably guided, double-sided flat clamping surfaces (156, 158) having central jaws (154) is arranged.

19. Clamping device according to one of the preceding claims, characterized in that the spindle (42) on the first clamping yoke (36) is rotatable about its longitudinal axis (52), but is held immovably in its axial direction.

20. Clamping device according to claim 19, characterized in that the second clamping yoke (38) on a spindle nut (66) of the spindle (42) is held.

21. Clamping device according to one of the preceding claims, characterized in that the spindle (42) on the first clamping yoke (36) is held pivotably about an axis (56) perpendicular to the plane of movement (58).

22. Clamping device according to one of the preceding claims, characterized in that the second clamping yoke (38) is held on the spindle (42) so as to be pivotable about an axis (74) perpendicular to the plane of movement (58).

23. Clamping device according to one of the preceding claims, characterized in that the first clamping yoke (36) is fixedly connected to a base body (10).

24. Clamping device according to claim 23, characterized in that the first clamping yoke (36) is held on an arm (26) extending from the base body (10).

25. Clamping device according to claim 24, characterized in that the arm (26) between the Spannj ochen (36, 38) extends laterally from the spindle (42) in one direction only.

26. Clamping device according to one of claims 23 to 25, characterized in that the base body (10) has a sliding plate (40) for the second clamping yoke (38).

27. Clamping device according to one of claims 23 to 26, characterized in that the base body (10) has a guide (232) for an end piece (234) facing away from the first clamping yoke (36) of the spindle (42).

28. Clamping device according to claim 27, characterized in that the guide through a guide slot (232) in a guide body encompassed by the base body (230) is formed, in which the end piece (234) is immersed.

29. Clamping device according to claim 27 or 28, characterized in that the guide (232) secures the spindle (42) against movement away from the sliding plate (40).

30. Clamping device according to one of claims 27 to 29, characterized in that the guide (232) allows a pivoting movement of the spindle (42).

31. Clamping device according to one of claims 23 to 30, characterized in that the base body has compartments (166, 168).

32. Clamping device according to one of claims 23 to 31, characterized in that the base body (10) is box-shaped in the region of a workbench attachment.

33. Clamping device according to claim 31 or 32, characterized in that a drawer (174, 250) is provided in the base body (10).

34. Clamping device according to claim 33, characterized in that the drawer is a catch tray (174) which can be positioned in the area between the clamping yokes (36, 38) and below this.

35. Clamping device according to one of claims 23 to 34, characterized in that the base body (10) has fastening devices (180) for additional units (182).

36. Clamping device according to claim 35, characterized in that the fastening devices are recesses (180) in the base body.

37. Clamping device according to claim 35 or 36, characterized in that a saw guide device (182, 190) which can be inserted into a fastening device (180) is provided and comprises a vertical guide (182) for a saw (202) running perpendicular to the plane of movement (58) .

38. Clamping device according to claim 37, characterized in that a horizontal guide (190) is provided on the vertical guide (182), in which the saw (202) is guided displaceably in the sawing direction.

39. Clamping device according to one of claims 23 to 38, characterized in that the base body (10) has an anvil (176).

40. Clamping device according to claim 39, characterized in that the base body (10) has anvils (226) arranged on opposite sides.

41. Clamping device according to claim 39 or 40, characterized in that the anvil (176, 226) has bending or flanged edges.