SU479895A1 - Key connection - Google Patents

Description

one

The invention relates to the field of engineering.

Key connection of parts mating on flat surfaces by means of threaded elements and a key-key, having adjustment screws fixed with a gap in the groove of the lower part with screws and tightly fitting into the groove of the upper part, is known.

However, in such a connection there is no possibility of adjusting the relative position of the parts in the direction of the axis of the key, therefore, complete disassembly of the connection of the parts is required.

To make it possible to adjust the mutual position of the parts along the key without completely disassembling the assembly, the adjusting screws of the proposed connection are made integral with the key in the form of threaded shanks located on its ends and fitted with nuts abutting the inner walls of the grooves located in the lower part.

In addition, the inner walls of the grooves can be made inclined.

FIG. I shows a general view of the proposed keyed connection; in fig. 2 is a section along A-A in FIG. one.

Body part 1 is attached to the plate 2 by bolts 3 located on special legs. Holes for bolts are made in the form of grooves.

The mutual arrangement of parts 1 and 2 is fixed by means of a key-guide 4 fixed in the dimensional groove of the lower part.

This groove is made about mm longer than the key 4, which is fixed in it with the help of nuts 5 screwed onto its threaded

shanks 6. Threaded shanks are made at both ends in the lower part of the key. The upper part of the key is made, with clean, precisely machined ends with the size L, along which, as in width B, exactly

Matched with Part 1.

Plate 2 has tongs for the passage of threaded shanks and a groove pocket for accommodating nuts and a key for service. Nuts with washers 1 are fastened on the walls

8 of these grooves, fixing the position of the key in the slot of the plate.

Walls 8 are inclined with undercut. When tightening the nuts, the spline presses to the bottom of the pocket, preventing its

dropout when disassembling the connection.

Thus, the nuts interacting with the help of washers with the inclined walls of the grooves, perform three functions: adjustment along the axis, fixation of the adjustment and fastening the key.

If adjustment is necessary, i.e. the displacement of the cornet part 1 relative to the plate 2, the bolts 3 are first loosened, one of the nuts 5 is loosened by an angle corresponding to the length of the required movement, and the other is tightened.

It is convenient to control the displacement using an indicator attached to the plate with the gauge rod resting at the end of the body part. Lower accuracy is provided by the reading of the angle of rotation of the loosened nut, taking into account the thread pitch on the threaded shank.x.

After the adjustment is completed, the bolts are tightened again.

The keyed connection described does not require complete disassembly of the assembly when adjusting, the adjustment and locking elements of the key are brought out of the connection, which ensures ease of assembly and debugging of the device.

Subject invention

Claims (2)

1. Key connection of parts mating on flat surfaces with threaded elements and keys-guide having adjustment screws fixed with a gap in the groove of the lower part with screws and tightly fitting into the groove of the upper part, characterized in that providing the possibility of adjusting the relative position of the key parts without completely dismantling the assembly, the adjustment screws are made integral with the key in the form of threaded shanks located at its ends and provided with nuts abutting the internal walls of the bore holes located in the bottom part. 2. Key connection according to claim 1, characterized in that the inner walls of the grooves are inclined. 2 h 756 FIG I