Clamping system with "third hand" function

Abstract

The invention relates to a clamping system (9, 10) for clamping a workpiece, in particular for machining a clamped workpiece in a machining centre. The clamping system (9, 10) according to the invention has a slide guide (11) and two slides (12, 13 or 14, 15), which are displaceable in the slide guide (11) and Clamping jaw receptacles for mounting the clamping jaws are respectively carried. The clamping system (9, 10) according to the invention also comprises a rotatably mounted clamping spindle (24, 25), which acts on the first slide (13, 14) on the one hand and on the other On the one hand, it acts on the second slide (12, 15) in order to clamp the two slides (12, 13 or 14, 15) relative to each other corresponding to the rotational position of the clamping spindle (24, 25). The clamping system ( 9 , 10 ) according to the invention also has a third fixed clamping jaw receptacle for mounting the fixed jaw. Thus, a first workpiece can be clamped between the first clamping jaw and the central stationary jaw, and a second workpiece can be clamped between the second clamping jaw and the central stationary jaw. The clamping system (9, 10) according to the invention also enables a "third hand" function. The clamping system (9, 10) according to the invention is now characterized in that the slides (26, 27) can move along the slide guide (11), the slides (26, 27) can be Adjust spindle (28, 29) movement. The sliders (26, 27) cooperate with the first sliders (13, 14) and define a defined range of movement of the first sliders (13, 14) relative to the sliders (26, 27), such that the sliders (26 , 27) A stop for the first slider (13, 14) is respectively formed at the boundary of the range of motion to enable the "third hand" function.

Description

technical field [0001] The invention relates to a clamping system for clamping a workpiece, in particular for machining the clamped workpiece in a machining center. Background technique [0002] In modern machining centers for machining workpieces, the workpiece is usually clamped in a clamping system and then machined while clamped. Here, usually a vise is used As a clamping system, the vise has, for example, a central fixed jaw and two outer clamping jaws, wherein the two clamping jaws can be moved relative to each other by the clamping spindle for clamping The workpiece is clamped between the clamping jaws and the fixed jaws. [0003] Furthermore, it is known from the prior art to equip such vises with a so-called "third hand" function. This means that it is often necessary to hold both workpieces during the fixed clamping, since they would otherwise fall out of the vise in the unclamped state. For this reason, two hands are required for manual operation, so that a t...

AI Technical Summary

Problems solved by technology

[0007] Furthermore, in known vises, the "third hand" function can only be realized on one side, which means that the workpiece can only be temporarily held on one side of the vise, while on the other side of the vise The workpiece must be held manually or mechanically until the end of the clamping process

[0008] A further disadvantage is that four workpieces can only be clamped with floating jaws, which usually prevents the robot from operating, since the vise is also oriented vertically during robot operation, and the jaws cannot stay here due to the vertical orientation. in its place

[0009] Finally, a disadvantage of known vises with a "third hand" function is that this "third hand" function cannot be guaranteed against contamination, since for example material debris can intrude, which affects the spring travel

That is, the known vises are usually open at the top, so that debris can penetrate, which in the worst case leads to functional impairment

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