SU1324773A1 - Method of machining a hole - Google Patents

Abstract

The invention relates to metal cutting and can be used when machining holes in hard-to-reach places. The purpose of the invention is to improve the accuracy of processing holes located on. console inside the body parts. Before processing, a load is applied to the console 6 at the point A between the section of the console's mounting and the axis of the hole being machined at a distance exceeding 1-2 mm in radius of the hole being machined. To do this, before processing, the jig 11 is installed so that its protruding part 12 i rests on the console at point A. The necessary load is applied to the conductor, sufficient to bend the console 6 within its elastic deformation. of In the conductor 11, a hole 13 is made at an angle ei. The drill 10 is inserted into the hole 13 and is informed by rotation and axial movement. In order to eliminate the action of the axial component of the cutting force, when drilling holes, the stop 14 is brought to the lower end of the console, which prevents further f. Bending to the bend of the console. 4 il. but

Description

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The invention relates to metal cutting and can be used to machine holes in hard-to-reach places.

The purpose of the invention is to improve the processing accuracy of the holes located on the console inside the part body.

Figure 1 shows the scheme of implementation of the method of processing the hole; figure 2 is a view of And figure 1; FIG. 3 is a diagram of the application of load to the console before processing; Fig. 4 is a diagram of the position of the console during and after machining the hole.

In part 1, holes 2–5, located on brackets 6–9, are to be machined. The holes are arranged in such a way that the axis 00 of any of the holes passes through the body of the part, in connection with which the access of the tool to from -20 versts and 2-5 is difficult.

To obtain holes, it is necessary to bend within the limits of the elastic deformation of the arms 6 —bore-. Steps 2 - 5, as a result of which the axes of the holes pass outside the body of the part, thereby providing freedom -., the tool’s access to the holes. For this purpose, an EF is applied to the consoles, the size of which is limited

to avoid the destruction of consoles. Under the action of the load P, each console, for example, 6, takes a curved position, with the section EA curved 5 linearly and the BP area remains linear, located at an angle d. to the original. Metal console on the site of blood pressure is not subject to bending deformation. In the conductor 11 is made at an angle cL hole 13.

The rotary drill 10 is inserted into the hole 13 and the working axial feed S is reported until the tool tip comes out of the cantilever metal. In order to eliminate the effect of the axial component of the cutting force, when drilling the holes, an emphasis 14 is applied to the lower end of the console, which prevents further bending of the console 6..

After machining, the drill bit 10 is removed from the machined hole. Similarly, the remaining holes 3–5 in part 1 are processed in a similar manner.

After machining the holes 2-5, the effect of the load P is removed, with the result that the arms 6-9 take the initial position with the specified location of the axes of the machined holes.

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load. J

on the elastic deformation of each console.

In order to increase the accuracy of the mold

workable holes load P

apply at a distance of 1-2 mm,

exceeding the radius R processed 35 part located inside the body, with

holes at point A, since the layer of the me-

tallo on the section of the console DD remains angle to the axis of the hole and inform him

not subject to bending deformation.

For accurate centering of the drill ID, a power jig 11 is used.

relies on each console at point A.

45

Claims (1)

Invention Formula The method of processing the console hole. rotation and axial movement, so that, in order to increase the machining accuracy, a load is applied to the console between the attachment point of the console and the hole axis at a distance from the said axis, exceeding the radius of the workpiece K, the conductor 11 is applied and bend the console with R., numerically equal to the sum of the loads P on each console. Pg-load is applied by a calibrated device that to avoid the destruction of consoles. Under the action of the load P, each console, for example, 6, takes a curved position, with the section EA curved in a curved manner, and the section of the arterial pressure remains linear, located at an angle d. to the original. Metal console on the site of blood pressure is not subject to bending deformation. In the conductor 11 is made at an angle cL hole 13. Rotary drill 10 into the hole. Stage 13 and inform the working axial flow S before the tool tip comes out of the cantilever metal. In order to eliminate the effect of the axial component of the cutting force, when drilling holes, the stop 14 is applied to the lower end of the console, which prevents the bend of the console 6 from further bending. After machining, the drill bit 10 is removed from the machined hole. Similarly, the remaining holes 3–5 in part 1 are processed in a similar manner. After machining the holes 2-5, the effect of the load P is removed, with the result that the arms 6-9 take the initial position with the specified location of the axes of the machined holes. Invention Formula The method of processing the console hole. rotation and axial movement, so that, in order to increase machining accuracy, a load is applied to the console between the attachment point of the console and the hole axis at a distance from the said axis, exceeding the radius of the hole through the elastic deformation, after making the hole. FIG. Fa & 2 9g.Z Editor N. Bobkova 2999/9 Circulation 974 Subscription VNIZhSH State Committee of the USSR for inventions and discoveries 113035, Moscow, F-15, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Compiled by G. Sirotovsk Tehred and. Popovich Proofreader H, King