A clamping and dusting or hammering device for the temporary holding of longitudinal workpieces such as wire pieces, or for the working of the same device and the use of such a device in a wire-working device for the manufacture of wire pins, or Nails.

摘要

The invention relates to a clamping and upsetting or hammering device. …??The prior art comprises devices which have two clamping levers with a clamping tool, a cam mechanism for actuating the same and an upsetting or hammering tool, the common axis of rotation of the levers intersecting the wire feed axis at right angles or running parallel thereto. …??The disadvantage of these axis arrangements is that the clamping force is provided exclusively by the control shaft of the cam mechanism. …??The object of the invention is to boost the clamping force by an increasing upsetting or hammering force while simultaneously relieving the load on the cam mechanism. …??The solution to this object is, on the one hand, the separation of the two axes (16) of rotation of the clamping levers (18 and 20) and the symmetrical arrangement of these axes and the arrangement of the wire feed axis (82) and the upsetting or hammering direction at right angles to the axes of rotation of the levers and to the cam control shaft (34), the said direction (82) intersecting this shaft and crossing centrally through the two axes (16) of rotation, and, on the other hand, the direct non-positive control of the clamping levers (18 and 20) via at least one control cam (32) on the control shaft (34) and in each case one cam roller (30) on the lever arm (26 and 38 respectively) remote from the tool by means of a device (54) for maintaining non-positive engagement, which holds the roller (30) against the cam (32). …??The advantage of this solution to the object is that the initial clamping force increases with the increase in the upsetting or hammering force, at least until the rollers lift off from the cam disc, and that the subsequent increase in force can only stress the lever bearings. …IMAGE…