SU664725A1 - Feeding-clamping arrangement - Google Patents

Description

one

The invention relates to the field of wire processing and can be used in straightening devices for wire feeding, with low axial stiffness.

A feeding device is known, comprising a drive carriage placed in the bed guides, a self-jamming chuck mounted on the carriage and a cartridge wedging mechanism placed on the bed at the end of the feed stroke 1.

The disadvantage of this device lies in the fact that it does not solve the problem of avoiding deformation of the wire having a small axial rigidity in the initial period of the carriage's reverse stroke and cannot be used in the correct-cutting device, in which the rear end of the wire is clamped in the correct wiring and the front Its end fed to the cutting device is not fixed in it from axial displacement.

The aim of the invention is the elimination of deformation of a wire having low axial stiffness.

This goal is achieved by the fact that in the proposed device the carriage is made with a conical bore, coaxially with the axis of the Tsodachi, and is equipped with a tongue with a carbon copy.

The working surface, chuck chuck is placed in the conical bore of the carriage and consists of a spring-loaded separator with grooves and a working groove on the tail section and balls located in the grooves of the separator and in contact with the conical bore of the carriage, and the riving mechanism of the cartridge is spring-loaded in the radial direction of the axis feeding a stopper having two working surfaces, one of which interacts with the working surface of the shtyr, and the second with the working groove of the separator, while the working from the separator is offset from the working surface of the shtyr towards the idling of the carriage

FIG. I depicts a general view of the device, an axial section; in fig. 2 — device in operation (thin lines in the drawings show wire).

The device comprises a carriage 1, which can move in the guides 2 of the frame 3 and has a conical bore 4 coaxially with the feed axis 5; A clamping chuck is placed in the bore 4, which includes a separator 6 with recesses 7 and a working groove 8 on the tail part 9 and balls 10 located in the recesses 7 of the separator b and in contact with the conical bore 4 of the carriage 1 under the action of the spring 11. 12 with a coping working surface 13. On the bed 3 at the end of the feed stroke there is a wedging mechanism of the clamping chuck containing a stopper 14 with a spring 15, having two working surfaces 16 and 17.

The device works as follows.

At the end of the stroke of the carriage 1 (according to the drawing to the left) the copier working surface 13 pin 12 comes into contact with the working surface 16 of the stopper 14. The stopper 14 rises, allowing the tail part 9 of the separator 6 to pass under the stopper 14. With further movement of the carriage 1 the copier working the surface 13 of the pin 12 comes out of contact with the working surface 16 of the stopper 14, and the latter is lowered under the action of the spring 15 into the working groove 8 on the tail part 9 of the separator 6.

During the return stroke of the carriage 1, the separator 6 is held by the stopper 14 by engaging its working surface 17 with the working groove 8 on the tail section 9 of the separator 6, and the carriage 1 continues to move. As a result, the balls 10 release the wire 18, and the chuck is wedged.

Upon further movement of the carriage 1, the copier working surface 13 of the pin 12 again comes into contact with the working surface 16 of the stopper 14. The stopper 14 rises, and its working surface 17 comes out of engagement with the working groove 8 on the tail part 9 of the separator 6. The separator 6 is under the action of compressed spring 11 is fed up to

contact of balls 10 with a conical bore 4 carriage 1. Device, ready for the next wire feed.

Claims (1)

Invention Formula A feed clamping device comprising a driving carriage mounted in the bed guides mounted On the carriage, a self-jamming chuck and a wedging mechanism of the cartridge placed on the bed at the end of the feed stroke, characterized in that, in order to avoid deformation of the wire having a small axial rigidity, the carriage is made with a conical bore, coaxially with the feed axis, and is equipped with a pin with a working rim surface, clamping cartridge is placed in the conical bore of the carriage and consists of a spring-loaded separator with grooves and a working groove on the tail section and balls located in the grooves of the separator and contacting with a conical bore of the carriage, and the wedging mechanism of the cartridge is made in the form of a spring loaded in the radial direction relative to the feed axis of the stopper having two working surfaces, one of which interacts with the working surface of the pin, and the second with the working groove of the separator, while the working groove of the separator is offset from working surface towards the idling carriage. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 515558, cl. In 21F 23/00, 1976. S / l 7 /;