SU727341A1 - Tool assembly of rotary machine for cutting-off hollow articles - Google Patents

Description

one

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for trimming hollow articles.

A known tool block to a rotary machine for trimming hollow articles, comprising a movable mandrel for mounting And feeding articles and a cutting tool mounted on a rotating spindle 1.

The disadvantage of this tool block is the formation of burrs on the internal cavity of the product.

A tool block to a rotary machine for cutting hollow articles is also known, comprising a housing, a spindle associated with the rotor of the machine, a mandrel mounted on the spindle, a slide with a drive of reciprocating movement along the housing, a puller and a cutting tool with a feed mechanism for cutting 2 .

However, when trimming the wall of the product, it is seamed, resulting in a burr on the inner edge of the wall of the product. In addition, the prior art device does not allow cutting off thick-walled articles, since this sharply increases the cutting force, which causes the mandrel to break.

or chipping cutting tools.

The purpose of the invention is to provide high-quality trimming of thick-walled products.

This is achieved in that the tool assembly to the rotor hollowing machine is provided with an additional cutting tool in the form of a ring rigidly mounted on the mandrel and a movable spring-loaded sleeve mounted on the mandrel and cooperating with a puller associated with the slide, while the cutting tool and the spring-loaded sleeve are equal to each other.

FIG. 1 shows the proposed device, a general view; in fig. 2 is a view A of FIG. 1: in FIG. 3 shows a section BB in FIG. one.

The tool block to the rotor tool for trimming hollow articles comprises a housing 1 fixed to the block holder 2

rotary machine, spindle 3 connected via gears 4 and 5 to the rotor of the machine, mounted on spindle 3 mandrel 6 for mounting the product 7, slide 8 with the tool 1, the puller 9 installed on it, and the cutting tool 10 with the mechanism 11 feeding it to the cut . . ,; .,. , ...

In the grooves of the drum of the rotor 12 can be placed several sliders 8, equipped with a drive reciprocating movement.

The mechanism 1G for feeding the cutting tool 10 to the cut consists of a rod 13 rotating in the supports 14 and a driving lever 15 interacting with the free end with the fixed rotor 16. On the schhang 13 with the help of a screw 17, a clamp 18 is fixed, in which an axle 19 is installed in the sub-holders for mounting the cutting tool 10.

An additional cutting tool 21 is rigidly fixed to the mandrel 6 by means of a nut 20. In addition, a spring-loaded sleeve 23 is mounted on the mandrel 6 by means of a tong 22, cooperating with a stripper 9.

The outer diameters of the additional cutting tool 21 and the sleeve 23 are equal to each other.

The tool block for cutting hollow articles works as follows.

When the slider 8 is in the lower position, the product 7 is fed into the puller 9 from the transport rotor. During the upward movement of the slider 8, the puller

9c, the product 7 also moves upwards and the product 7 is put on the rotating mandrel 6, and the product 7 carried along by the forces of the mandrel 6 also begins to rotate.

At the same time, the puller 9 rests on the spring-loaded sleeve 23, while a gap is formed between the sleeve 23 and the additional cutting tool 21. All this time, the cutting tool 10 by the cam 16 and the lever 15 is retracted from the product 7.

Upon further rotation of the rotor, the free end of the lever 15 moves to a smaller radius of the copier 16. The rod 13 under the action of the spring 24 rotates, together with the cutting tool 10, feed to the cut. After cutting tool

10 comes into contact with the product 7, it begins to rotate, and under the action of the spring 24 it is cut. The cutting contact of its tool 10 with the product 7 takes place at the gap between the additional cutting tool 21 and the spring loaded sleeve 23. The position of the cutting tool 10 relative to the additional cutting tool 21 is adjusted by moving the lever 18 along the rod 13 with the help of a screw 17.

After the tool 10 is placed in the desired position, it is fixed on the lever 18 by means of the screw 25.

Thus, at the moment of cutting, the product 7 rests on the additional cutting tool 21 and the spring-loaded sleeve 23, the cutting tool 10 is located in the gap between them. Such an arrangement of the listed parts ensures the perpendicularity of the product 7 to the tool, and, therefore, the cutting plane is always

perpendicular to the wall of the product 7. In this case, between cutting tools 10 and 21, a clean cut without burrs is obtained, and the edge of the cut-off ringle is slightly rolled. After the operation is verified, the cutting tool 10 is retracted to the initial position by turning the bar 13. At the same time, the slider 8 moves down and lowers the puller 9, while springing down, lowers onto the sleeve 23 onto the additional cutting tool 21, forming with it

a single cylindrical surface from which the trimmed ring and the product 7 are easily removed by the puller 9. The trimmed product 7 is gripped by the transport rotor, the ring falls into the tray, after which the cycle is repeated.

Claims (2)

1. KoschKin L.N. Complex automation based on rotary machines. M., “Mashinostroenie, 1972, p. 77-79, fig. 63. 2. USSR author's certificate number 194739, cl. B 23 D 19/08, 1965. fc / ten 5