RU1779473C - Method and apparatus for boring internal shaped surface of part - Google Patents

Abstract

Usage: in the production of electric machines, and in particular for simultaneous processing on the boring machines of the contact surfaces of the main and auxiliary poles in the beds of electric machines located at a different distance from the axis of rotation. The invention provides synchronous rotation of the copier and the details mounted on the tansha. fixed to the table, the axis of which is the drive shaft. From the rotational movement of the shaft with the copier, toolholders with cutters installed in the device housing receive radial movement. The copier has the ability to translate along the axis in the ale. The incisors are mounted with a successively increasing radial reach so that their vertices are displaced in the direction of the longitudinal ogh of the device in increasing value from the previous incisor to the next 2 sec., 4 or 00 C

Description

The invention relates to the mechanical processing of metals by cutting and can be used in the manufacture of electric machines, namely for simultaneous processing on the turning and rotary machines of the contact surfaces of the main and auxiliary poles in the beds of electric machines located at different distances from the axis of rotation

A known method and device for boring non-circular holes on turning and horizontal boring machines

A device for boring non-circular holes on turning and turning-boring machines, comprising a housing made in the form of a sleeve installed in the machine spindle, in the wall of which there is a spring-loaded tool holder interacting with that installed inside the mandrel

stationary copier A device for handling non-circular surfaces on lathes, a housing containing a slider with a tool holder interacting with the housing, the rotational movement of which is transmitted from the machine spindle through a gear transmission and a telescopic articulated shaft

It is also known a device containing a copying mechanism for moving the cutting units, driven by a differential gearbox, a shaft mounted on the machine spindle, bearing a sleeve and a faceplate, provided with radial grooves for boring and cutting units in contact with the working surface of the copier, which is located inside the faceplate coaxially with the shaft with an opportunity

h y

rotation and connected via a sleeve to a differential gear.

The specified device discloses a method for boring non-circular surfaces. According to the known method, during translational movement of the workpiece and rotational - cutters, the last report radial movement from a stationary or performing rotational movements through a differential gear of the copier.

A disadvantage of the known method is the limitation of technological processing capabilities due to the rigid mounting of the copier or its rotation through an intermediate link - reducer, which does not allow the simultaneous boring of several differently spaced surfaces.

The disadvantage of this device for implementing the known method is the movement of the cutting units from spiral-ring copiers through differential gearboxes complicating the design, which does not allow to simultaneously include all the cutters installed in the device, which reduces the productivity of the bore. In addition, the device cannot be used on turning and rotary machines, on which the workpiece is installed in a vertical position for boring and at the same time trimming the end or turning with a side support.

The purpose of the invention is to increase productivity and expand technological capabilities by providing simultaneous processing of a discontinuous contoured surface.

The goal is achieved in that the device provides synchronous rotation of the copier and the part mounted on the faceplate, mounted on the machine table, the axis of which is the drive shaft of the device. Radial movements of the holder with the copier can receive radial movements of the tool holders located in the device’s body installed in the turret of the vertical support of the machine, and the copier has the ability to make, in addition to rotational, translational motion along the axis of the shaft simultaneously with the movement vertical support.

 In addition, in the device, the cutters in the tool holders are mounted with a successively increasing radial extension so that their vertices are offset in the direction of the longitudinal axis of the device in increasing magnitude from the previous cutter to the next.

In FIG. 1 shows a general view of a carousel with a multi-cutter installed on it, FIG. 2 is a longitudinal section AA in FIG. 1 (without a device for mounting the workpiece and drive shaft): FIG. 3 is a section BB in figure 2; Fig. 4 is a schematic diagram of an arrangement of incisors in a multi-incisor head.

0 To implement the boring method (Figs. 1 and 3) during rotational movement of the table of the machine 13 with the faceplate 12 and the workpiece 1 being machined, the drive shaft 10. mounted along the axis of the faceplate, synchronizes the rotational movement of the casing 2 (Fig. 3) from which radial movements are obtained cutters 5-8 of the device while simultaneously longitudinally moving along the axis of the drive shaft of the housing with cutters when machining the part along the length.

The device comprises a housing 3 (FIG. 2), bearing tool holders 4 with cutters 5, 6. 7, 8 (FIG. 3) moved their radial mechanism 5, including a copier 2, rotatably mounted in the housing 3, and a drive shaft 10 (figure 1), mounted coaxially with the copier 2 and connected to it by means of a spline connection 11

0 (Fig. H), the device for mounting the workpiece 1 is made in the form of a faceplate 12 (Fig. 1), with which the drive shaft 10 is mounted kinematically connected, which is axially movable

5 of the copier 2, and the cutters 5-3 are mounted with a sequentially increasing radial reach so that their vertices are offset in the direction of the longitudinal axis of the device in increasing value from the previous

0 cutter to the next (figure 4).

8 housing 3 (Fig. 2) accommodates ball bearings 14 supporting a radial movement mechanism 9 of cutters 5-8. The spline connection 11 is installed in ball bearings 14 located in the housing 3, the toolholders 4 can be moved in the sleeves 15. In addition, the toolholder 4 contains ball bearings 16 and a roller 17 (figure 2)

0 glasses 18, fingers 19, springs 20, caps 21. The housing 3 is mounted in the turret 22 (Fig. 1) of the vertical support of the machine.

The foyer operates as follows.

In the initial state, the turret 22 of the vertical support (Fig. 1) is in the upper position. Part 1 is fixed in an orientable position on the faceplate 12 of the table 13 of the machine. When lowering the turret 22 of the vertical caliper, in which the housing 3 of the multi-cutter device is fixed, the spline connection 11 (Fig. 3) engages with the drive shaft 10 (Fig. 1), as a result of which the copier 2 starts to rotate synchronously with the faceplate 12 and part 1 (figure 2). The rollers 17 are interconnected with ball bearings 16 located in the tool holders 4 with cutters mounted on them 5-8. The rollers 17 are constantly pressed against the copier 2 by means of springs 20. resting on the caps 21, as a result of which a certain radial movement is transmitted from the copier 2 to the cutters 5-8. These cutters 5-8 due to various departures I (Fig. 4) (C; 2, h; M) and the displacement of their vertices by b with respect to the previous cutter in one pass of the vertical caliper make a four-fold removal of the allowance t (depth cutting). Thus, in one pass of the vertical caliper, the surface is completely bored from the machined part located at different distances from its vertical axis.

Claims (2)

SUMMARY OF THE INVENTION 1. A method for boring the inner contoured surface of a part with rotational and translational motion of the part and cutters, which, when processing the part along its length in each transverse the cross section reports radial movement from the rotating copier, which is also distinguished by the fact that, in order to increase productivity and expand technological capabilities by providing processing of an intermittent shaped surface, the part and the copier are rotated synchronously. 2. A device for boring the internal contoured surface of a part, comprising a housing carrying toolholders with cutters and a mechanism for radially moving them, including a swivel mounted rotatably in the housing and a drive unit. coaxial alignment established by a copier and connected to it by means of a spline connection, a device for mounting a workpiece, characterized in that, in order to increase productivity and expand technological capabilities, the device for installing a workpiece is made in the form of a face plate to which kinematically connected a drive shaft mounted with the possibility of axial movement relative to the copier, and the cutters are installed with a successively increasing radial reach, so that their vertices are displaced They are shown in the direction of the longitudinal axis of the device according to the increasing value of st of the previous cutter to the next.  So j-  H) FIG. 4