SU1013239A2 - Apparatus for finishing and strengthening working of cylindrical surfaces - Google Patents

Abstract

1. DEVICE FOR CLEANING AND STRENGTHENING TREATMENT CYLINDRICAL SURFACES on the author. St. 254358 characterized in that, in order to increase productivity, it is equipped with a mechanism for adjusting the length of the spring deformer. an item. 2. The device according to claim 1, characterized in that the adjustment mechanism is made in the form of a screw with a locking ring mounted in a hole made in the mandrel, and a finger with a pin, while a longitudinal groove is made in the frame for accommodating naked finger.

Description

3 8. & @ / - | @ - / @ / @ - i @ fSi The invention relates to machine building and is used for surface plastic deformation of machine parts, According to the main author. St. No. 254358, a device for finishing and strengthening processing of cylindrical surfaces is known, which contains a circular oboyg with deforming elements installed in it with the possibility of free rotation on the mandrel,. made, in the form of a spring with an outer diameter that is not a multiple of the diameter of the surface to be machined. However, this device does not both produce the highest productivity of treatment when hardening cylindrical surfaces of various lengths. The aim of the invention is to increase the productivity of processing while hardening cylindrical ritpBepits of various lengths. The goal is achieved by the fact that a mechanism for adjusting the length of the spring deforming element is mounted on the holder. In addition, the mechanism for varying the length of the deforming element is made of a screw with a retaining ring placed in the hole, made in the mandrel, and rings with a heel, with a longitudinal slot in the mandrel for accommodating said finger. Such an embodiment of the tool will determine the length of the deforming element exactly corresponding to the length of the surface to be treated, which leads to an increase in processing efficiency. FIG. 1 shows a tool, a general view; FIG. 2 is a view A of FIG. The tool contains; p pcs case 1 (Fig. 2), in which the holder 2 is mounted, preloaded with spring 3, installed with bearing on the crank 4, connected to case 1. In the subtypes 5 and 6, the holder 2 (Fig. 1) is installed a mandrel 7 with a deforming element 8, made in the form of a spring, the outer diameter of which is not a multiple of the diameter of the surface to be treated. On the holder there is mounted a mechanism for changing the length of the deforming element 8 consisting of a screw 9 placed in the opening of the mandrel 7. One end of the screw is connected with a retaining ring 10 with a heel 11, in which a finger 12 is pressed, connected to the ring 13, which is installed sliding on the mandrel 7. In the mandrel 7 there is a longitudinal groove for the fingers 12. At the other end of the screw 9, the nut 14 is screwed, equipped with a locking screw 15. The nut 14 is mounted with bearing on the bearing 16.. The device works as follows. The housing 1 of the device is fastened to the support of the lathe, and the workpiece is fixed in the spindle. The tool is brought up to the contact with the surface to be machined and create a tension on the spring 3, which provides the necessary reinforcement. Turn on the rotation of the spindle of the machine, while the deforming element 8 rolls around the workpiece. The trace of the deforming element on the machined surface is a helix, and with each new revolution of the part, the trace shifts relative to the previous position, processing all new surface areas, since the diameter of the deforming element is not a multiple of the diameter of the part. Spindle rotation is turned off after the surface has been completely rolled. The highest processing performance is provided in the case when the length of the deforming element is equal to the length of the surface to be treated. IF to process a surface of greater length, it is necessary to do a second pass of processing, which reduces productivity by two times, and if to process a surface of smaller length, the processing time will be the same as in the case when the lengths of the deforming element and the surface to be treated are equal. The adjustment of the length of the deforming element is made by rotating the nut 14, which through the screw 9, p 11, the finger 12 and the ring 13 transfers the movement to the deforming element 8. The length of the deforming element 8 is set equal to the length of the surface to be treated. Therefore, when machining surfaces of greater length, they are processed in a single pass, and when machining surfaces of shorter length, all turns of the spring deforming element 8 are involved in the rolling-in. Using the proposed tool as compared to the base object allows, provided the length of the deforming element changes , to create a regular-variable microrelief, which, under conditions of uneven wear, allows to increase wear resistance.

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Claims (2)

1. DEVICE FOR CLEAN AND STRENGTHENING CYLINDER PROCESSING FIR SURFACES by author. St. "254358 characterized in that, in order to increase productivity, it is equipped with a mechanism for regulating the length of the spring deforming element. 2. The device pop., 1, characterized in that the control mechanism is made in the form of a screw with a retaining ring installed in the hole made in the mandrel, and a finger with a heel, while in the mandrel, made a longitudinal groove to accommodate the said finger,