SU106740A1 - The method of setting the run-in in the process of cutting the flying wheel of a worm wheel on a gear milling machine - Google Patents

Description

The subject of the invention is a method for adjusting the run-in in the process of cutting the worm gears on a gear milling machine with a flying cutter without using a sliding caliper.

In contrast to the known method, which serves the same purpose and that the periodic dividing guitar of the machine is disengaged periodically, the driven wheel turns on one or several teeth, and the cutter, respectively, moves along the axis of the mandrel, offers, for simplifying the method, the screw movement of the cutter is carried out by turning the cutter using a special gear coupling installed in the division chain, and moving the cutter along the axis of the mandrel using the curve of the copier applied on the end of the mandrel support sleeve.

FIG. 1 shows the arrangement of the gear clutch, which serves to rotate the tool (position / and //); in fig. 2- sketch of the mandrel of the volatile cutter; in fig. 3 - sketch

support (rear rack) mandrel; in fig. 4 is a diagram of the location of the mandrel of the volatile cutter at various stages of setting up the running-in process (position a);

A gear coupling (Fig. 1) is placed on the axis of the milling pin before or after its drive element — the driving gear. In the first case, the mandrel of the flying cutter has the usual appearance; in the second, the teeth must be cut on it / for adhesion to the gear coupling 2 mounted on the milling pin 3 (Fig. 2).

As indicated above, the copier curve / (Fig. 3), used to axially move the tool, is applied to the end of the sleeve 2, which is installed in the rear support 3 of the tool holder. In the sleeve 2 is pressed bronze sleeve 4, which serves as a support for the mandrel cutter.

FIG. 4 shows the sequence of actions when setting up a running wheel of the worm wheel in this way.

a) Install the flying cutter in the central position relative to the workpiece.

b) The cutter is shifted to the nominal center distance and the workpiece of the wheel being cut is touched.

c) Retract the mandrel from the workpiece (in the radial direction), establish the beginning of the screw-driver at the cutting edge of the tool, and in this position fix the back support of the mandrel.

d) Pull the cutter away from the copier (50-60 mm) by moving the stem of the spindle along its axis.

e) In this position, the mandrel is pulled out from the engagement with the intermediate sleeve, turned into one or two teeth and re-inserted into the engagement with the sleeve.

e) Axial movement of the pinch leads the cutter to contact with the copier. After that, the spindle post is secured.

g) Diverting back support

mandrel along the axis of the last to set in the working position. Then the first cutting cycle is performed, moving the workpiece in the radial direction to the nominal center-to-center distance.

Subsequently, the cutting is carried out with a repetition of the described techniques until the cutter comes out of contact with the workpiece on the other side.

Subject invention

The method of setting the run-in during the cutting by the flying cutter of the worm rims on a gear milling machine, characterized in that, in order to simplify the running-in process when operating without a extended caliper, the screw movement of the tool is achieved by separate rotations of the tool relative to the axis of the milling cutter and permutation it along the axis of this mandrel.

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