SU774809A1 - Machine for superfinishing ball bearing race grooves - Google Patents

Description

I

The invention relates to the field of finishing abrasive machining and can be used in machine tools for superfinishing of grooves of polycrystal (instrument) ball rings.

A machine is known in which the installation of a removable microscope with an ocular grid in the bore of the swing shaft of the working head is provided, which, while removing the holder with the tool, aligns the axis of the swing shaft with the center of the groove profile and controls the position of the tool {ij.

The disadvantage of this machine is

high complexity of settings due to the need to install a microscope before setting up the machine and its demitage before processing; it does not include means for particularly fine tuning of the working head, which limits the accuracy of the setting, and also the machine requires the provision of

The bridges of machining and tool cutting through the bore of the swing shaft are unattainable, for example, in machines for ultrasonic superfinishing.

The aim of the invention is to eliminate the noted disadvantages.

For this, the microscope is fixed on the bracket, the mentioned bracket and the caliper are installed on mutually parallel guides parallel to the plane of the axial support of the ring, and the machine is equipped with coarse and thin movements of the caliper along its guides and rotation of the working head, as well as a measuring instrument of displacements And the tool holder, the stops and the measuring strut are aligned to align the axis of the swing shaft of the working head with the optical axis of the microscope.

Fig, 1 shows the machine, a general view; in fig. 2 is a view along arrow A in FIG. one; FIG. 3 is a view along arrow B of FIG. 1; FIG. 4 shows the arrangement of the set-up needle relative to the profile of the female head 377; in fig. 5 - the location of the setup needle in the field of view of the microscope; Fig. 6 shows the location of the instrument in the field of view of the microscope; in fig. 7 location of the instrument relative to the trough of the gutter ring. The machine base and rotation 2 with axial support 3, stationary radial support 4 and driving rollers 5 and 6 carrying the workpiece ring 7 to be machined are installed on the machine bed 1, a loading and unloading device with a loading arm 8 is also installed on the bed. 9 beds, located in the perpendicular axis of the ring 7 of the plane, are mounted on the base of the caliper. The base of the caliper is equipped with a screw 11 of coarse radial adjustment, which interacts with a thin radial set-up disk 12 mounted on the frame with a disc 12. On the frame installed gauge 13 displacement caliper. On the basis of the caliper, the rotary part 15 with the operating head fixed on it is mounted via the axis 14. In the rotary part 15 of the caliper, a screw 17 of coarse axial adjustment is installed, which interacts with a thin axial adjustment of the axial position of the axle 18; The displacement meter 19 also controls the axial adjustment of the working head 16 and is equipped with a swing shaft 2O parallel to the axis 14 of the rotary part 15 of the caliper and carrying arm 21, equipped with a mandrel 22 with a tool 23 or a replaceable a set-up mandrel with a needle 24. The swing shaft drive is made in the form of a rotation-converting mechanism 25 into an alternating movement, the pulley 26 of which is associated with an engine (not shown) mounted on a frame by means of transmission gears 27, 28 and counter-pulley 29. On the basis of and on the rotatable part 15 of the caliper, cylindrical stops 30 and 31 are fixed parallel to the axis, at least one of which (DA) is made in the form of a rotary eccentric, and the machine is equipped with a removable fixing gauge-strut 32 with forked ends, ystvuyuschi E with abutments 30, 31. The shaft wobble sleep wives reference surface for positioning the measurer 33 urging the lever 21 is also provided with guide Oanshsh yuschii 34 to 35 krenteyna kotsryh through microscope 36 is fastened, the latter optieska axis parallel to the axis 14. The machine operates as follows. When setting up the machine, the rotary part 5 is retracted from the base of the caliper, and the rotation angle relative to the axis 14 (Fig. 3) is placed on the measuring bar 3 2, the forks of which are borrowed from the cylindrical stops 30 of the base and 31 of the rotary part. On the lever 21, the mandrel is fixed with the needle 24 and the needle point is aligned with the axis of the swing shaft 20 of the working head 16, controlled by a microscope 36, in the field of which, if properly aligned, the tip of the needle should remain in place regardless of the position of the swing shaft (Fig. 5) . Then, on the working head, a measurer 33 is installed, the probe of which interacts with pin 21, the base item 4, 5, 6 is placed on the reference article - ring 7, the bar 32 is removed, the needle 24 is brought to the toroid surface of the ring groove (Fig. 4) and rotated a swing shaft, controlled by a measurer 33, the needle is squeezed out. The coarse screw 17 and the fine axial adjustment disk 18 align the axis of the swing shaft with the plane of symmetry of the chute, while measuring the displacement along the gauge 19. The screw 11 of the rough and disk 12 of fine radial adjustment are used to align the axis of the swing shaft with the center of the profile of the channel by moving in the plane symmetry of the gutter, the amount of movement is counted by measurer 13. After combining the tips of the needle and the axis of the swing shaft with the center of the groove, the flap portion is again placed on the bar 32 and the needle tip (FIG. 5) is aligned, i.e. the axis of the swing shaft 2 working head 16, with the center of the microscope's ocular grid 36. In this case, the horizontal adjustment is carried out by means of the eccentric of the DA, and the vertical adjustment by moving the bracket 35 of the microscope 36 along the vertical guides 34, then remove the measurer 33 n needle 24, ycira- the mandrel 22 with the tool 23 and in the field of view of the microscope is monitored for correct installation of the tool, after which the bar 32 is removed, the rings 7 are mounted on the base elements 4, 5, 6 and processed. When changing the tool, the rotary part 15 is re-placed on the bar 32 and the control-1T position

five

A new instrument on the ocular grid of the microscope.

Claims (1)

1. The machine KM 1OV2 firm Tilen. House of Germany. Vertical act liuirpoctfono