SU1060428A1 - Method of finish working of balls - Google Patents

Abstract

THE METHOD OF CLEANING OF BALLOONS, which are placed between a coaxially arranged fixed disk and two faceplates, rotated at different angular velocities in magnitude and direction, and in order to improve the quality and productivity of the process by continuous and uniform rotation of the instantaneous axis of rotation of the ball in the plane passing through the axis of the plate, the angular velocities of rotation of the faceplates vary sinusoidally symmetrically with their zero value with a phase shift.

Description

The invention relates to mechanical engineering and can be used both for surface, plastic deformation, and for abrasive finishing of balls in the bearing and instrument-making industry, as well as in the production of drilling operations.

. There is a known method of finishing balls that are placed between coaxially arranged fixed disk and two faceplates, rotated with different sizes and. direction of angular velocity l.

 However, this method does not allow continuous rotation of the instantaneous axis of rotation of the processed piece in a plane passing through the axis of rotation of the faceplate at a constant speed and velocity.

The aim of the invention is to improve the quality and productivity of the process by continuously and uniformly turning the instantaneous axis of rotation of the ball in the plane passing through the axis of the faceplates. rotated at angular velocities of different magnitudes and loads, the angular velocities of rotation of the planglyb change the 1H sinusoidal law symmetrically to their H5 left value with phase shift.

On Phi1,1 shows the finishing scheme of the balls; Fig. 2 is a graph of the addition of angular velocities of zalzeni face plates.

The proposed method of finishing balls includes rotation of the processed ball 1 by drive faceplates 2 n 3 relative to the fixed disk 4.

The plates 2 and 3 rotate with angular velocities S.O. and Qj, respectively, their magnitude and direction are sinusoidally with a fan value,

i. ).

symmetrically to zero, 1, 7 2

chenieo speeds.

As a result, the machined ball 1 rotates around its instantaneous axis pp with an absolute angular velocity, the vector of which Si coincides with the latter. The instant axis at the same time turns the BOKpyj of the center of the processed ball 1 in the plane, which coincides with the axis of rotation of the drive face plates 2 and 5 with a constant angular velocity in size and direction. As a result, the forging of the screw path of the left and right machining

directions with a uniform pattern. This is due to the fact that a sinusoidal value of U with a constant frequency w c can be represented (5 as the sum of two or more other sinusoidal values with the same frequency

and-with, + G2,

where (e) g and G :) are the current values of the angular velocity of rotation of the ball around the I-1 axes and II-II, respectively.

Here, G :: I, and CJ are defined by dependencies;

w, -Ai-5in (oOj.)

and W7 (u) .o2)

where A and D / 2 are maximum values (amplitudes of oscillations of variable angular velocities ss and G.) respectively

(, 01 ccnst - initial phases of koi RQ ,, const

to and Q2 t is the processing time;

t052 const is the angular velocity of rotation of the instantaneous axis of the ball around its center in a plane passing through the axis of the rotation of the spring face plates.

A complete rotation of the instantaneous axis Р-Р in the direction of the angle f is performed for one period of oscillation of variables J JJ Н UJ 2 l g-T a

Q

S1

The main technological characteristic in the processing of balls in this way is the sha: the trajectories of the machining traces, the equal flow:

QQ

.. -five."",

where52 is the absolute angular velocity of the ball

1 - radius of processing: “ББЕЕ” of the 5th ball Example, Surface plating deformation of a ball with an inch diameter of GFH1 steel; with a hardness of HRC. 621 with initial heat exchange is produced under laboratory conditions. Balls 1 are rotated using drive faceplates 2 and 3 with respect to the fixed deforming disk 4.

The angular velocities of the SS and Q of drive faceplates 2 and 3 are continuously sinusoidally adjusted with respect to the zero value of these velocities and from phase to zero.

a shift equal to - ensure that

 rotation of the processed ball around the instantaneous axis of rotation with a jl-lute angular velocity S. The instantaneous axis of rotation of the ball 1 at the same time rotates around its center in the plane passing the axis of rotation of the drive faceplates 2 and 3. As a result of the interaction of the processed ball I at the point of contact with the deforming disk 4, trajectories of processing traces are formed on its surface, the character of which depends from COOTUS, the tests showed that the best condition for the formation of the trajectory of processing marks on the surface of the ball is that when the axis of rotation of the ball is rotated around its center eryvno with angular skorostyuSOd 52. When the instantaneous axis of rotation of the ball is rotated around its center by an angle of 3 f, a full screw line of machining marks is formed on the surface of the ball, the beginning and end of which is in diametrically opposite points. Further rotation of the instantaneous axis of rotation of the ball in the direction of the angle B leads to the imposition of processing traces, and when it changes to the surface of the ball, traces of processing of the opposite direction are formed, forming a pre-uniform grid. Some modes of surface plastic deformation of balls by rolling are given in Table L. EXAMPLE 2 Balls 1–2 inches in diameter made of steel ShKh15 with a hardness of HRC 62 and with an initial roughness of Pr 0.8 were performed under laboratory conditions. The balls 1 are rotated relative to the end of the fixed clamping disc 4 using faceplates 2 and 3, Fg1 of the annular plane formed by faceplates 2 and 3, and the end face of the pressure disc 4 is pre-animated with 5/3 micron AFM diamond paste. The angular velocities Q and OO of the planitib 2 and 3, respectively, continuously change according to a sinusoidal law, symmetrically to their zero value with the same amplitudes of the K - periods of 1 2 oscillations with a phase shift equal to О liJ Pi, thereby ensuring the rotation of the processed ball to an instant rotation with absolutely angular velocity Q. As in the previous example, the instantaneous axis of rotation of the ball continuously rotates around its center in a plane passing through the axis of rotation of the faceplates 2 and 3. As a result of the interaction of the processed ball at the points of contact with faceplates 2 and 3 and the pressure disc 4, a trajectory path is formed on its surface. processing, the character of which depends on the ratio rj Tests have shown that the best condition for the formation of the trajectory and traces on the surface of the ball is the condition when the instantaneous speed of rotation of the ball rotates around its center continuously with an angular velocity OA Ya. When the instantaneous axis of rotation of the w-ara rotates around its center at an angle in on the surface of the ball, a spiral of processing lines is formed, the beginning and the end of which are in diametrically opposite points. Further rotation of the axis of rotation of the ball in the direction of the angle 3 leads to the imposition of traces of processing, and when it changes within Tf p and 2i, the trajectory of the traces of processing of the opposite direction forms on the surface of the ball, forming a uniform grid from the previous one. The lab tests showed the process control of path formation traces of processing in a wide range, predicting their nature and speed of education, which significantly improves the quality and performance of the process. Some modes of ball finishing are given in table 2. Thus, it becomes possible to rotate the processed ball so that its instantaneous axis can rotate continuously and uniformly with the feed rate throughout the entire process of the plane passing through the axis of rotation of the drive face plates. This allows automated control of the parameters of the trajectory of the machining tracks on the surface of the ball in a wide range and during the whole process.

T ci blitz 1

0.131

1.25

0.296 2.83 0.526 5.02

table 2

Claims (1)

METHOD FOR PURE PROCESSING OF BALLS, which are placed between coaxially located stationary disk and two faceplates rotated with angular speeds of different magnitude and direction, characterized in that, in order to improve the quality and productivity of the process by continuous and uniform rotation, the instantaneous axis of rotation of the ball in the plane passing through the axis of the faceplates, the angular velocity of rotation of the faceplates is changed according to a sinusoidal law symmetrically to their zero value with a phase shift. 1 10