RU1771922C - Method of part perpendicular to machine tool spindle axis - Google Patents

Abstract

Usage: etc. - surface treatment of parts on metal cutting machines. SUMMARY OF THE INVENTION: A part having a plane and supporting surfaces is mounted on supports. One of the supports is taken as the base. The origin of the coordinate system in which the centers of the supports are located is combined with the center of the base support. Lower the machine spindle with the dial and indicator fixed in it. The distance by which the tip of the indicator is offset from the axis of the spindle is measured. By rotating the spindle, the non-perpendicularity of the plane of the workpiece of the spindle axis is measured as the maximum indicator value. At the same time, the indicator's angle of rotation relative to the X axis is noted along the limb with the maximum deviation of its arrow. To read the angle on the machine headstock, a stand with a pointer is fixed. Calculation values of the heights of the supports are calculated according to the formula Ahi (Xicos a + Yisin а, where hi is the correction value of the 1st support; 6 is the maximum indicator value; R is the distance from the spindle axis to the indicator tip; Xi, Y (- the distance of the 1st support from the base along the X and Y axes, respectively; а - the indicator rotation angle corresponding to the maximum indicator reading. Then, the heights of the supports are adjusted, leaving the height of the base support unchanged. 3 ill. CO C

Description

The invention relates to machine tool industry and can be used in the treatment of surfaces of parts on metal cutting machines.

The purpose of the invention is to increase labor productivity.

On Fig, 1 shows the placement on the machine of the part on the supports and the center detector in the spindle; figure 2 is a section aa in figure 1; in Fig.3 is a view along arrow B in Fig.2.

The invention is carried out as follows. Part 1 having a plane 2 and supporting surfaces 3-5 are installed on the table b of the machine 7 by means of supports 8-10. One of the supports, for example 8, is taken as the base. The origin of the coordinate system in which the centers of the supports 8, 9, 10 are located is combined with the center of the base support. The direction of the coordinate axes is assumed to be the X axis - perpendicular to the base «of the table, and the Y axis - along these grooves. The distance (X | and YI) between the other supports and the base in the plane of the table is measured in two mutually perpendicular directions.

1 vj

yo yo

Then lower the spindle 11 of the machine 7 with the center detector 12 and the limb 13 and indicator 14 fixed therein.

The distance R is measured by which the tip 15 of indicator 14 is offset from the axis of the spindle.

By rotating the spindle, the non-perpendicularity of the plane 2 of part 1 to the axis of the spindle is measured as the maximum value of indicator 14 (value 5). At the same time, along the limb 13, the angle α of the indicator 14 is turned relative to the X axis with the maximum deviation of its arrow. To read the angle a, a stand 17 with a pointer 18 is fixed on the headstock 16 of the machine 7.

The height adjustment values of the supports are calculated by the formula;

Ahi

6

ttg

(Xicoscr + Yisin a).

where A hi is the correction value of the 1st support;

b - the maximum value of the indicator;

R is the distance from the spindle axis to the indicator tip;

Xi and YI are the distances of the 1st support from the base, respectively, along the X and Y axes;

“- the indicator pivot angle corresponding to the maximum indicator reading.

. According to the above arrangement of the supports in Fig. 2 A pa O, since XB 0, Ye O

A hg -TJ-R- (Xgcos a + Ygsln "),

Ahio -7G-P- (Xiocos a + Ytoslna).

Then, the heights hg and hio of the supports 10 and 9 are adjusted, leaving the height he of the support 8 unchanged. If the angle of rotation of the indicator is measured from the point of greatest lowering of the measuring tip of the indicator, a positive value of the calculated value of the correction of the support means the need to reduce the height of the support, and a negative value means an increase in height. If the maximum point of the indicator tip is taken for the maximum indicator readings, then the positive value of the calculated value

adjusting the height of the foot means increasing the height of the foot and vice versa.

The proposed method of installing parts perpendicular to the axis of the machine spindle

increases labor productivity. It allows to exclude multiple measurements of non-perpendicularity with subsequent repeated adjustments of the heights of the supports.

Claims (1)

The claims A method of installing a part perpendicular to the axis of the machine spindle, in which the part is placed on the supports fixed on the table and the height of the supports is adjusted according to the indications of the indicator, for which the latter is installed in the machine spindle, characterized in that in order to increase labor productivity, one of the supports is taken as the base, the distance between the other supports and the base in the table plane is measured in two mutually perpendicular directions, then the distance from the spindle axis to the indicator tip is measured, the maximum value of the indicator value is determined and the indicator rotation angle corresponding to it, after which the values for adjusting the remaining supports in height are determined by the formula d Ahi -Tj-ff (Xicos a + Yisln a), where hi is the value of i correction of the 1st support; d is the maximum value of the indicator; R is the distance from the axis of the spindle to the tip of the indicator; Xi, YI — distance of the 1st support from the base along the X and Y axes, respectively; a - indicator rotation angle corresponding to the maximum indicator reading. M FIG. 2 M 8 In id b Fig.Z