SU529015A1 - Edging Machine - Google Patents

Description

one

The invention can be used in mechanical engineering for trimming and milling bevels for welding on the edges of curved contour bottoms, in particular, of flaring flat bottoms of round, oval and elliptical shapes.

Known machines, including the bench-attached table and the pinch rollers, do not allow high-quality processing of oval and ellipse bottoms.

To improve the quality of processing in the proposed machine, the stop is made in the form of a flat roller mounted on the frame with a notch on its lateral outer surface, the machine is equipped with a carriage mounted on the frame for reciprocating movement of the pinch rollers.

FIG. 1 shows the proposed machine, a longitudinal section; in fig. 2 is the same, view along arrow A in FIG. one; in fig. 3, 4 and 5sequential positions of the bottom (e.g., elliptical) relative to the table and the pressure rollers.

On the bed 1 on the axis 2 a table 3 is installed, made in the form of a flat roller with a notch on the outer side surface and a smooth end. The radius of the circle of this table - the roller must be less (or equal) to the small radius of curvature of the bottom to be machined. Thus, all sizes of elliptical or oval bottoms, in which the small radius of curvature is greater than or equal to the radius of the table 3, can be machined.

Claims (1)

On the base 1, there is also installed a table drive 3, consisting of an electromotor 10 wigatel 4, a box of 5 speeds, a conical pair of gears 6 and a drive gear 7, meshed with the gear ring on the inner side surface of the table. Processed bottom 8 set on the table 3 so that the inner part of the collar of the bottom is pressed against the side surface of the support table. Outside, the bottom 8 presses the pinch rollers 9, the axes of which are rigidly mounted on a common carriage 10 located in the guides 11 with the ability to move in them with the aid of a screw pair 12 through the spring 13) with the flywheel 14. The axis of movement of the carriage 1O is directed to the center table and passes through the middle of the line connecting the points i touching the pressure rollers 9, strictly perpendicular to it. A pneumatic cylinder 15 is fixed on the cantilever trunk of the bed 1, the axis of which coincides with the axis of rotation of the support table. On the iKOHue of the rod of the pneumatic cylinder 15, the rocker arm 16 is pivotally fixed, at the ends of which in bearings there are rotary axes 17 with forks 18 and barrel rollers 19. Under the table 3, a support 20 is mounted, moving along vertical guides 21 using a screw pair 22 driven by a flywheel 23 through a conical pair 24 and a chain gear 25. On the support 20, a sector 26 is installed with a circular groove for securing the milling head 27 with the cutter 28 at the desired angle. The milling head 27 is mounted on the caliper 2O so that the projection of its longitudinal axis onto the plane of the support table 3 is constantly on the straight line passing through its center and its point of contact with the bottom to be machined. On this straight line is also the axis of movement of the carriage 1O with rollers. The machine works as follows. The bottom 8 to be processed is placed from the side down onto the end surface of the table 3 and pressed against it by the rollers 19 under the influence of the pneumatic cylinder 15. Then, using the flywheel 14, the carriage 1 is brought from the outside to the shoulder of the bottom to be processed so that the pressure rollers 9 press the bottom flanging to the side surface the support table 3 with a certain force, providing the necessary adhesion between this surface and the workpiece. The drive of the support table is turned on, it starts rotating at a given speed. In this case, the spring-loaded carriage 10 performs a reciprocating movement by the amount of the change in the height of the contour segment of the machined bottom enclosed between the contact points of the pressure rollers. When passing between the rollers of the part with a small radius of curvature, the carriage 10 with the pressure rollers O- moves closer to the center of the support table 3, and when passing the section with a large radius it moves further from the center. After the bottom begins to rotate, turning the flywheel 23, the caliper 20J is brought upwards, having previously installed the milling head 27 at the desired angle, and the mill 28 gradually cuts into the shoulder of the bottom to be processed to the desired height. Further processing of the bevel on the edge of the bottom flange is carried out automatically. At the same time, the part is self-aligning on the table in such a way that its curved contour is always perpendicular to the horizontal projection of the axis of the milling head. The machining is completed after the bottom has completed a full turn, counting from the point where the cutter has reached the desired size. The machine provides milling of the bevel on the outer and on the inside of the flanging at any angle, as well as milling of the boom on the collar of the bottoms (for example, if necessary, connect the bottom with a shell made of a sheet of smaller thickness) .; In this case, end mills are used with the appropriate installation of the milling head, the invention The machine tool for processing edges on the flanged bottoms with a variable radius of curvature, including associated with the frame. the table and pinch rollers are distinguished by the fact that, in order to improve the quality of processing, the table is designed as mounted on a bed with the possibility of rotation of a flat roller with a notch on its lateral outer surface, and the machine is equipped with a bed mounted on it. possibility of reciprocating movement of the carriage carrying the pinch rollers. 1