SU931330A1 - Apparatus for chamfering - Google Patents

Description

(54) DEVICE FOR REMOVAL OF BACKGROUND

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The invention relates to a machine tool industry and can be used non-lathe machines to remove facial juice from parts such as bushings.

A device for chamfering parts with bushings is known, comprising a housing carrying a spring-loaded double-arm lever with a cutter and a copier mounted on the machine body.

A disadvantage of the known device is the complexity and considerable size of the system of removal and supply of the cutter, made in the form of hydraulic cylinders.

The purpose of the invention is to simplify the design.

To achieve this goal, the device is equipped with a pusher mounted in the housing in contact with the lever, which is designed as a cut disc and one shoulder which has the ability to be adjusted in height, with a hole in the specified shoulder and a copier with a stop and placed in the hole of the lever arm with self-installation.

The drawing schematically shows the proposed device.

The device comprises a cylindrical body 1, a double-sided lever swung on its axis 2, a pusher 3, a spring 4 and an emphasis 5 placed in its groove.

The double-shouldered lever consists of a disk 6 and shoulders 7 and 8 rigidly mounted on it.

Disc 6 is cut to height h. The height h is taken within the range of 0.16-0.25 from the outer diameter, D of the disk (smaller, against the indicated values, will load the operation of the pushers 3, the large ones are limited by the design features of the device). In the shoulder 7 there is a place in the seat for the cutter 9. The shoulder 8 of the CPU of the ease of installation is made in the form of a screw screwed into the disk 6 and locked with a nut 10.

Claims (1)

A profile hole is made in the upper part of the screw. The surface of the hole is made along the radius P equal to the least adjusting distance of it on the swing of the lever. The stop 5 consists of a threaded stud 11, passed into the profile hole (by running fit) of the shoulder 8, and the locking nuts 12. The surface 13 of the stop 5 is curvilinear to ensure smooth tool feeding, the pusher 3 is T-shaped. The part of the pusher in contact with the cut surface of the disk 6 in cross section has the shape of a rectangle in contact with the spring 4 of the shape of a cylinder. The spring 4 in the opening of the housing is installed with the necessary force for the operation of the pusher 3. The hole is closed by a threaded plug (not shown). In the seat of the holder (organ of the machine tool), install the housing 1, which carries a swinging double-arm lever. In the seat of the shoulder 7, the cutter 9 is fastened (the profile of the curvature of which must first be coordinated with the profile of the chamfer and the angle of the two arms at the end of the cutting process). Having determined the installation site, the tool holder with the device is fixed rigidly, the threaded rod 11 of the stop 3 is passed through the hole in the shoulder 8 and set, and then the lock with a 12 n gear box (for other cases in places inside the feed unit), for this After unscrewing the standard screw, use a threaded hole that serves to fasten the flange on the mirror end of the gearbox. On the stud 11, in the desired position (at the beginning of the working turn of the two-armed lever), set the stop 5 and also lock it with a nut. The device works as follows. When the longitudinal slide (feed unit) is fed along arrow S (forward), shoulder 8, reaching stop 5, rests on curved surface 13 and turns on axis 2 along arrow S 2 akisk 6 by a given angle (radius of chamfer groove) the peripheral surface of the disk cut (acting as an eccentric) retracts the pusher 3 to the right. The shoulder 7 brings the cutter 9 and its cutting edges cut the desired profile of the chamfer groove on the inner surface of the Part 14. Here you should note the value of the special profile of the hole in the shoulder 8. When turning the two-arm lever, the shoulder 8 acts on the curvilinear top 13 to the stop 5 in the direction of the arrow Sj, while the stud 11, not having rigidity, receives an angular deviation. The magnitude of this deviation limits the size and profile of the hole. The cylindrical shape of the hole leads to the wedging of the lever, the open form in the form of a fork causes the pin 11 to deflect to an unacceptable angle. Replacing the studs, for example, with a rigid bracket is possible in principle, but it leads to an increase in size, the need to solve the issues of mounting and placing the stop, and the device is complicated to set up. During the return movement of the longitudinal slide-feed element, the pusher 3, returning under the action of the spring 4 and in contact with the cut surface of the disk 6, returns the double-arm lever to the same initial position for repeating the processing cycle. If it is necessary to treat another scarf 14 with a shortened or elongated distance from the face to the chamfer groove (copier), the stop 5 is reinstalled to the corresponding distance along the pin 11, the counter nut 12, and the cycle is repeated in the indicated sequence. The use of the proposed device expands the technological capabilities of automatic machines, cancels the finishing operations on chamfering. universal machines, relieves operators from manual work and increases productivity by 10% -2%. The device is simple in design, does not require upgrading the equipment and its drives. It will be widely used in enterprises using automatic machines of the type L240-6. The invention The device for chamfering with parts such as bushings, comprising a housing carrying a spring-loaded two-arm lever with a cutter, and a copier mounted on the machine body, characterized in that, in order to simplify the design, it is provided with a pusher mounted in the housing in contact with the lever which is made in the form of a cut-off disk and one shoulder of which has the ability to be adjusted in height, moreover, in u593133O .6 aan shoulder is made from ergio, and the co- Sources of information the feast is provided with emphasis and placed in the game taken into account during the examination lever arm version with possibility1. USSR author's certificate self-installation.N 3OSO18, class B 23 D 21 / GS, 1971.