SU1404199A1 - Arrangement for setting the depth of working - Google Patents

Abstract

The invention relates to metal cutting and improves the accuracy of machining parts of low rigidity. A spring-loaded wedge 11 with a one-sided bevel 12 moves in a floating stop 6, in which is placed the next stop 5. When moving the floating point 6, relative to the next stop 5, after when the last support pin 8 protrudes into the part 18, the oblique surface 15 of the window 14 moves away from the bevel 12 of the compensating wedge 11. The wedge 11 is released and under the action of the spring 13 is moved again to contact with the oblique Surface 15. The length of the movement of the wedge t1 depends on the amount of deviation of the machined surface 17 of the part 18 from its nominal value. In this case, the workpiece 18 is affected only by the spring force 7 transmitted through the following stop 5. The feed force of the power billet acting through the regulator (L

Description

 about

four

CO SO

Four stop 16, is extinguished by a hard stop 3. With the further movement of the pin 1, the adjustable stop 16 reaches the bevel 12 of the wedge 11, presses it

to hard stop 3 and stops. There is an exposure of the power head with the tool on the hard stop 3. 2 Il.

one

The invention relates to metal cutting and can be used in power heads of aggregate machines.

The purpose of the invention is to improve the accuracy of processing parts of low rigidity.

FIG. 1 shows the proposed device, a general view; Fig. 2 is a diagram of the acting forces and compensation of deviations of the base surface of the part;

The device mounted on the pinola 1 of the tool spindle 2 of the power head contains a hard stop 3 which determines the size of the treatment and is mounted on the body 4 of the power head. The follow stop 5, placed in the floating stop 6, moves under the action of the spring 7, and the support point 8 is installed at its end. The follower follow 5 travel in the device body 9 is limited with a tongue 10. The device for determining the size of the treatment is equipped with a wedge 11, on which a one-sided bevel 12 is made.

The wedge 1.1 moves in the floating stop 6 by means of the spring 13. In the following stop 5, a window 14 is made with a flat surface 15, with which the one-sided bevel 12 of the wedge 11 interacts. In the device case 9, an adjustable stop 16 is positioned to adjust the position of the tool spindle 2 the machined surface 17 of the part 18. The roller 19 mounted on the wedge 11 serves to interact with the cam 20 mounted on the fixed body 4 of the power head.

The device works in the following way.

The next one is the 5th stop 5, the supporting point 8 when the tool is moving forward, it rests

In detail 18, it stops; And, the floating support 6 moves until it rests on its support plane 21 against the fixed support 3.

5 When the floating stop 6 is moved relative to the following stop 5, the oblique surface 15 of the window 14 moves away from the bevel 12 of the compensating wedge 1I. The wedge 11 is released and, under the action of the spring 13, moves again until it touches the beveled surface 15. The length of movement of the wedge 11 depends on the deviation of the machined surface 17 of the part 18

15 from its nominal position. When the base surface 17 of the part 18 has a deviation a from the nominal value, the bevel 12 of the wedge 11 also moves by a.and the movement

The 20 pintles of 1 force 1 tin also change by the value of a. In this case, the workpiece 18 is affected by the force P of the spring 7, transmitted through the track 1 to the stop 5, and the force Eg to 25

power billets, acting

through an adjustable guide, 16, extinguished by a hard stop 3 (FIG. 2).

With further movement of the quill, the adjustable stop 16 comes to

The 30 wedge 12 of the wedge 11 and, pressing it against the hard stop 3, stops. There is an exposure tool on a hard stop - nursing.

The microswitch of the extreme position of the power head (not shown) gives the command to retract the quill 1 power head to its original position. When the device returns to its original position, the cam 20 located

40 on the stationary body 4 of the power head, acts through the roller 19 n wedge 1 and returns it to its original position, and the speed surface 15 of the window -14 of the following foot 5 keeps it in this position by means of crap forces. Angle of bevelled surface

STI 15 is equal to or less than the self-braking angle.

Since the feed of the power head is extinguished by a hard stop 3 and only a small force of the spring 7 acts on the part 18, the part does not deform. As a result, the accuracy of obtaining linear dimensions from the surface increases, especially when machining non-rigid parts.

Claims (1)

Formula from the range A device for setting the processing depth, comprising a hard stop associated with the body of the power head and kinematically interconnected floating and following stops, /five characterized in that, in order to increase the accuracy of machining of small rigidity, the device is equipped with a spring-loaded wedge with a one-sided bevel mounted for movement in a floating stop perpendicular to its longitudinal axis and in a window with a twisted surface that is made in the next stop, with the latter is placed in the floating stop, and the wedge is installed with the possibility of interaction by means of the wedge and flat surfaces, respectively, with the beveled surface of the window of the follower stop and with the surface There is a floating stop, which is installed with the possibility of contact with a hard stop.