SU1673416A1 - Method for dressing of cone grinding wheel - Google Patents

Abstract

This invention relates to metal working, in particular to the manufacture of gear wheels. The purpose of the invention is to simplify the method of dressing a conical grinding wheel made with the working surface in the form of alternating sections of convex, straight and concave shapes and intended for processing non-involute gear wheels. In the device, the diamond in the frame 1 is set at an angle to the axis of the circle and fixed on one end of the lever 6 of the system of levers 5 and 6. The levers 5 and 6 are fixed on the shaft 7, the longitudinal axis of which forms an auxiliary angle δ = 20 °. At the end of the lever 5, a spherical-shaped probe 9 is installed, which interacts with the cam 10 with a working surface identical to the working surface of the grinding wheel 1. The diamond setting angle is equal to the angle between the straight, perpendicular axis of rotation of the grinding wheel, and the straight through the mid-height point of the convex or concave working portion of the circle; and the mid-height point of the straight-line portion of the same side of the circle. 4 il.

Description

This invention relates to metal working, in particular to the manufacture of gear wheels.

The purpose of the invention is to simplify the method of straightening a circle made with a working surface in the form of alternating sections of convex, straight and concave shapes and intended for processing non-solvent gears.

Figure 1 presents the device profile edits, a General view in section, figure 2 - section aa in figure 1; fig.Z - node I in figure 2; figure 4 - scheme of interaction of the probe and the copier at the selected value of g.

The tapering grinding wheel 1 is edited by a device comprising a guide 2, a fork 3. A pin 4 connected to a system of levers 5 and 6, which are fixed to the shaft 7 movable in the longitudinal direction, forms the longitudinal axis of the shaft the contour of the grinding wheel auxiliary angle d equal to 20 °.

The first lever is connected to the probe 9, which has a spherical shape, which is in contact with the profile of the copier 10, and the second lever is connected to the diamond in the frame 11. The length of the arms of the levers 5 and 6 is chosen so that the stroke length of the center of the spherical probe 9 is equal to the stroke length of the tip the cutting edge of the diamond in the frame 11. The force of the clamp probe 9

about

with

about

The copier 10 is created by a spring 12, one end of which is connected to the shaft 7 and the other to the cover 13. The copier 10 is mounted on the rotary arm Y, whose left position, and with it the base plane 15 of the copier 10, can be changed in the A plane And on the angle Oa formed by the axis of symmetry 0-0 of the original contour 16 and the base plane 15 of the copier 10. The lever 14 is rotated around or .i using the sector 17 of the worm gear and the screw 18, which is the foot with the limb (in the drawing not shown). and Angles O The value of mind can vary from 15 to 30.

The installation angle ai "aza" j is taken to be equal to the angle between the straight, perpendicular axis of rotation of the face or the spike circle, and the straight line passing through the height point of a convex or bent working area of the wheel and the point height of a straight line for the same side of the circle, the radii of curvature of the shaped sections of the copier and probe being determined from the relation:

PIY.BH / V | nn + S. / E | KVP - pien G - (0.4 ... 0.8) Pwm.

where / 9 | kV, /. h the radii of curvature of the concave sections of the profile of the copier and the corresponding concave sections of the profile of the grinding wheel,

 ; pinn - the radii of curvature of the convex sections of the profile of the copier and the corresponding convex sections of the profile of the grinding wheel

 / Liiikon minimum curvature radius Vignuup / 41: 11-0 opiig profile

The adjustment of the adjustment is to install a copier 10 made by g uroi-1 y jj mp o.i. 11, Hci p i

and turning the base plane 15 of copier 10 onto yion with;

Device I. - ii automatically with the help of pr. H: blowingly When the fork 3 moves in the direction of the 2, a swinging movement of the levers 5 and 6 is performed. At the same time, the center of the spherical tip of the probe 9 moves along the trajectory 19 that coincides with the profile of the generating original contour of the teeth, and the tip of the cutting teeth diamond in the frame 11, moving along the generatrix of the conical surface of the grinding wheel reproduces this contour on it. Moreover, when moving the probe 9 (Fig. 2) in the direction indicated by the arrow b, the diamond in the frame 11 moves in the direction from the center to the periphery of the grinding wheel. When moving back

five

0

five

0

five

five

0

five

In the probe 9, the diamond in the rim 1 1 moves in the direction from the periphery to the center of the grinding wheel.

The minimum angle of the profile of the initial contour of the teeth “min is the minimum acute angle formed by the axis of symmetry of the contour and tangent to the contour profile.

The selected position of the straight line, which together with the axis of symmetry of the original contour form an angle "l, allows you to perform a copier with a fairly narrow field of scatter of the profile relative to its base plane, while not altering the overall, in particular, height dimensions of traditional flat copiers used for grinding circles with straight forming conical surfaces.

Claims (1)

Invention Formula The method of straightening a conical grinding wheel intended for machining a gear in the conditions of rolling diamond set at an angle to the axis of the circle and fixed on one end of the lever located with the possibility of interaction with the other end carrying a spherical probe with a copier whose working surface is identical to the working the surface of the grinding wheel, characterized in that, in order to simplify the method of dressing the wheel, made with the working surface in the form of alternating sections of convex, rectilinear and The shape of the diamond is assumed to be equal to the angle between the straight, perpendicular axis of rotation of the grinding wheel and the straight, passing through the height-wise point of the convex or concave working area of the wheel and at the height of the point of the straight line plot for the same side of the circle, while the radii of curvature of the shaped sections of the copier and probe are determined by dependencies: / 9 | кпн - + Г,  / 91вн г G (0.4 ... 0.8) / Amy kw where / E | kV and / E | v radii of curvature of the concave sections of the profile of the copier and the corresponding convex parts of the profile of the grinding wheel; plan and / E | VN - the radii of curvature of the convex sections of the profile of the copier and the corresponding concave sections of the profile of the grinding wheel; G - probe radius:  / Zmin kVN - the minimum radius of curvature of the concave section of the profile of the copier Z-gpf 9i 5L - s 8 OV-V # 0) V 91 Plih PIH SH YU Fig t