SU908553A1 - Mechanism for adjusting milling cutters at working grooves - Google Patents

Description

(, 54) MECHANISM OF ADJUSTMENT OF CUTTERS WHEN TREATING SPACES

one

The invention relates to mechanical engineering and can be used in the processing of dimensional grooves.

Mechanisms for adjusting cutters are known, including a hub for cutters and a device for their axial movement til.

These devices allow adjustment by moving only one cutter, which results in reduced machining accuracy, since the initial position of the plane of symmetry of the cutter is shifted relative to the symmetry axis of the groove to be machined. In addition, this device does not allow adjustment of the axial position of the mills in sets of disk mills.

The purpose of the invention is to improve the accuracy of the setting.

This goal is comprehended by the fact that the device is made up of milling saws mounted on threaded hubs of nuts and glasses elastically connected to them, and on the ends of the glasses and on the interacting ends of the mills there are toothed crowns.

On the outer surface of the nuts applied scale.

Figure 1 shows the device, a general view; 2 - the same, view 10; on fig.Z - section aa in figure 1.

The device contains a hollow hub 1, planted on the mandrel 2, and located on the middle spline

Claims (2)

15 parts of the hub 1 left 3 and right 4 mills, as well as a device for adjusting the axial movement, including nuts 5, located on the threaded ends of the hub 1 with the power of keys 6, ENTRY1-GC in the annular grooves on the hubs (Lrot 3 and 4, and spring-loaded springs 7 cups 8, each m of which is interconnected with 3 corresponding poverchiostoy cutters by means of a toothed grating. In addition, on the surface of the outer diameter of each nut prograduff and limb 9c U-head fixing of nuts 5 and cups 8 is provided with pins 10. On-outer The surfaces of the cups 8 are made symmetrically arranged transversely inclined faces a, which together with the face surfaces 5 of the cutters 3 and 4 are symmetrically arranged 1 S1 wedge grooves. The cutters 3 and A are set so that the projections of the one cutter with the cutting blades fit into the cavities between the projections another cutter. The device works as follows. For adjustment, the cutting knives of the cutters 3 and A to the required size across the width of the groove to be machined start up a two-edged key into the groove formed by the oblique flats of one of the glasses 8 and then One face 5 of one of the milling cutters, for example, a milling cutter 3. In this case, the cup 8 moves axially to the left and disengages from the mill 3. By turning the key, the cup 8 with it rotates the nut 5 with limb 9, as a result of which the mill 3 moves to axial direction to the required value determined by the border 9. After adjusting the size of the key, the key is removed from the groove, while the springs 7 move the cup 8 to the right until additional engagement of the end teeth of the cup 8 and the mold 3, i.e. The milling cutter 3 is locked against the base end of the hub 1 during vibrations during the milling process. Similarly, adjusting and fixing the cutter 4 to the size of the groove to be machined and, to adjust the axis of the plane of symmetry of the blades of the cutters 3 and 4 to the size t relative to the base end of the hub 1, move the cutters 3 and 4 sequentially in the axial direction to the desired value. The adjusted milling cutter is installed on the mandrel 2 and, if necessary, the milling width b or the size% is adjusted on the machine after the test passes. This device provides a convenient and accurate adjustment of the axial distance in sets of disk mills without the use of additional devices. The use of the proposed mechanism ensures the accuracy of processing, increases the technological capabilities of the equipment and reduces the loss of auxiliary time. Claim 1. Milling cutter adjustment mechanism when machining grooves includes a hub for mounting the milling cutters and a device for their axial movement, only because, in order to increase the accuracy of the setting, the device for axial movement of the milling tools is made in the form of nuts and elastically connected with. they have glasses, and the nuts are installed at the ends of the hub, which is provided with screw thread, and the tops of the glasses and the interacting ends of the cutters are made with toothed crowns. 2. A mechanism according to claim 1, characterized in that a scale is applied to the external surfaces of the nuts. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 475224, cl. B 23 C 3/28, 1973.