RU1804948C - Cutter plate - Google Patents

Abstract

Usage: the invention relates to the field of mechanical engineering, in particular to machine tools, and can be used on centerless turning machines. SUMMARY OF THE INVENTION: The cutting head of a centerless lathe for processing bar stock comprises a housing on which a slide with mounted cutting blocks is mounted. Dampers 3 are installed in the slide housing, each of which is made in the form of a rod with disk springs located between the compression sleeve mounted on the rod with the possibility of axial movement limited by fixing nuts installed on the rod and a piston, the lower part of which is made in the form a spherical support interacting with a ball placed with the possibility of adjusting to a given diameter of the workpiece with a clamping nut installed in the housing and made with a hole for partial exit ball. 2 ill. ate

Description

The invention relates to mechanical engineering and can be used on centerless lathes.

The aim of the invention is to improve the quality of processing of bar material. The use of dampers in the cutter head made in the form of a rod with disk springs allows improving the quality of the surface treatment of the bar by eliminating the dampers from vibration that occurs when the end of the bar leaves the centering rollers and will greatly simplify the design and its adjustment.

Figure 1 shows a General view of the cutting head; figure 2 - node I in figure 1.

The cutter head is made in the form of a housing and four sled 1. In the sled 1

the cutter block 2 and the damper 3 are mounted. The cutter head is fastened to the hollow spindle 5 by means of a round key 4. and bolts (not shown), which is mounted on the rolling bearings 6 and rotated through a gear wheel (not shown). Damper 3 consists of a ball 7, a compression nut 8 for its adjustment to a certain size relative to the cutting unit 2 and the spherical support

9. which is part of the piston and stem

10. A ball 7 is located between the compression nut 8 and the spherical support 9. Disc springs 13 are mounted on the piston of the rod 10 with the compression sleeve 11 and the compensator 12. The compensator 12 is installed to adjust the position of the piston with

00

about

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bevel 14. It corresponds to the bevel of the conical sleeve 15. To move the cutter block 2 with the cutter and the slide 1, the washer 16 and the conical sleeve 15 are used, the conical surface of which rests on the piston with the bevel 14 having a corresponding conical surface. Friction surfaces are lubricated. The damper 3 serves as a support to eliminate vibrations at the moment the end of the rod 17c of the centering rollers 18 comes out and maintain a stable position during the processing of the workpiece (bar) 17. The disk springs 13 are loaded to a certain load, assembled on the rod 10 and screwed with fixing nuts 19. The slider 20 is designed to mount the movement mechanism 16 of the conical sleeve 15 therein.

The setting and operation of the cutter head with a damper device is carried out as follows. The damper device 3 is adjusted on the top of the cutting insert with the use of a compression nut 8. Belleville springs 13 are mounted on the rod 10, a compression sleeve 11 is clamped by fixing nuts 19. A set of Belleville springs 13 is selected depending on the load on the ball 7. It is mounted the rod 10 with disk springs 13 into the slide 1. A ball 7 is mounted on the spherical support 9, which is pressed by the compression nut 8.

Using the fixing nuts 19, the compression sleeve 11, the compensator 12, and the compression nut 8, the level of the ball 7 is brought out to the level of the cutting plate. On the reverse side. Damper 3 inserts a piston with a bevel 14, which, with the help of a compensator 12, is set relative to the surface of the conical sleeve 15. The adjusting conical sleeve 15 is supported through the rolling bearings 6 on the slider 20, which is driven by four screws, a gearbox, and an electric motor ( not shown) has the ability to move along with the conical sleeve 15 along the hollow spindle 5. When the conical sleeve 15 moves onto the cutter rails, the diameter of the workpiece decreases and vice versa. In this case, the conical surface of the sleeve 15 is on the conical surface of the slide 1, thus moving the slide 1 together with the cutting unit 2 and the damper 3 to a different processing diameter. The feed blank (bar) 17 is held in front of the cutters by the centering rollers 18, and behind the cutters, inside the hollow spindle 5, by four dampers 3 located in two mutually perpendicular planes in the cutter blocks 2. These dampers 3 can be moved to the product 17 by tapered sleeve 15. The feed blank (bar) 17 passes through the centering rollers 18, the cutting head and is held by dampers 3 located behind the cutting head. When the end of the workpiece (bar) 17 leaves the centering rollers 18, the vibrations arising from this are compensated only by dampers, which ensures the quality of the surface treatment to the very end of the workpiece.

Claims (1)

The use of dampers in the cutter head made in the form of a rod with disk springs allows improving the quality of the surface treatment of the bar by eliminating the dampers from vibration that occurs when the end of the bar leaves the centering rollers, and greatly simplifies the design and its adjustment. SUMMARY OF THE INVENTION A cutting head for processing bar material, comprising a housing, an associated multi-position tool holder and dampers, the number of which corresponds to the number of cutters, characterized in that, in order to improve the quality of processing, the dampers are made in the form of a rod with disk springs installed on the rod with the possibility of axial movement of the compression sleeve, placed on the rod of the fixing nuts to limit the stroke of the compression sleeve, and a piston, the lower part of which is made in the form of spherical bearings interacting with a ball installed with the possibility of adjusting to a given machining diameter with a compression nut installed in the housing and made with an opening for partial exit of the ball, with Belleville springs located between the compression sleeve and the piston, and the damper located in a plane perpendicular to the axis heads.