SU963819A1 - Apparatus for working balls - Google Patents

Description

(54) DEVICE FOR TREATMENT OF BALLS. The invention relates to the field of abrasive machining and can be used in the bearing, automotive, aviation industries in the final processing of balls. A device for treating balls placed in the working area formed by the end surface of the rotating disk and the inner surface of cylindrical sleeves connected to the expansion chamber of compressed air by means of vertical nozzles and mounted on driving gears 1 is known. The disadvantages of this device include various conditions for processing balls located in sleeves installed at different distances from the axis of the rotating disk, and also the fact that the processing does not guarantee This change in the velocity vector of the tool's point of contact with the part in magnitude and direction, while there is also no cyclic change in the force effect of the medium under pressure HEf, the balls being processed. In addition, this device does not ensure the continuity of the processing cycle and requires an additional drive to ensure the loading of balls, and the design of the loading mechanism significantly increases the size of the device. Installing the bushings at a constant distance from the axis of the rotating disk leads to uneven wear, which requires frequent editing. The aim of the invention is to improve the quality of processing. This goal is achieved by the fact that the vertical nozzles are made in a fixed base in parallel rows, and the sleeves are connected to each other by means of moving links that form an endless chain laid parallel to each other. each of which is located above the corresponding row of nozzles. Moreover, guide rollers are mounted between adjacent rows of the chain, and one of them is the drive roller, made in the form of an asterisk associated with the drive, which ensures translational movement of the sleeves relative to the vertical nozzles. Installing the guide rollers on a fixed base provides in turn a zigzag arrangement of the chain under the rotating disk. FIG. 1 shows the device section; in fig. 2 — device without rotating tool disk; view from above; in fig. 3 - section A-A of FIG. 2; in fig. 4 - section bb FIG. 2

The device for processing balls contains a rotating tool disk 1, a fixed base 2, on which are installed by parallel rows using guide rollers 3 and a driving sprocket 4 an infinite chain 5 having a zigzag arrangement under the rotating tool disk 1, a loading device 6 and above the unloading tray 7 (Fig. 3). Infinite and, epi 5 is composed of interconnected instrumental sleeves 8 with the help of subarticles, in the internal cavity of which machined balls 9 are placed. The driving sprocket 4 is connected through a gear pair 10 with actuator I. The internal cavities of instrumental sleeves 8 communicate with the help of vertical nozzles 12, made in a fixed base 2, with a compressed air expansion chamber 13, the nozzles 12 being made in a fixed base 2 in the direction of movement of the endless chain 5 in the zone located under the rotating tool mental disc 1. At the rectilinear portions of the chain are installed retaining strap 14 (FIG. 4), fixed to the stationary base 2, preservatives tool sleeve 8 from contact with the rotating tool disk 1.

The device for processing balls operates as follows.

The movement of the infinite depot 5 is carried out from the drive 11 through the gear pair 10 and the driving sprocket 4, and the trajectory of the endless chain 5 is needed. The guide rollers 3 are provided. When the endless chain 5 passes under the loading device 6, the sleeves 8 are filled. balls 9. The processed balls 9 carried away by the endless chain 5 are moved into the working area under the tool disk 1, when the medium under pressure is fed into the expansion chamber 13 of the compressed air last through vertical lines la 12 acts on the balls 9 are processed, pressing them against the end of the working surface of the tool disc 1 when rotating processing which occurs in plugs stacked 8 Beads 9. When passing the endless chain 5 over the unloading chute 7 occurs discharging the treated beads.

The zigzag movement of the endless chain 5 with straight sections on the fixed base 2 under the rotating tool disk 1 provides a constant change in the vector of the instantaneous velocity of the ball in magnitude and direction, and the movement of the sleeves 8 above the vertical nozzles 12, made in the fixed base 2, provides a cyclic change in the force the effect of the pressure medium on the processed balls 9, the character of which depends on the frequency of the location of the nozzles 12 and the speed of BF. of the endless chain 5 (

The constant change in the vector of the instantaneous velocity of the balls in magnitude and direction and the cyclic effect on them by the medium under pressure ensures an intense uniform tracing of working tools on the spherical surface being processed.

The use of a chain for moving the balls in the working, loading and unloading zones ensures a continuous processing cycle when loading and unloading are combined with simultaneous processing in the absence of damage when entering and leaving the working area.

The device is characterized by simplicity due to the creation of a clamping force by supplying the medium under pressure and small dimensions, due to the design of the loading and unloading devices.

The use of compressed air contributes to the cooling of the working area and the removal of wear products from it, and the proposed design of the working area makes it possible to economically use the material of the working tool without the need for its profiling and dressing.

Moving one of the branches of the chain outside the working area automates the process of loading and unloading balls.

Claims (1)

1. USSR author's certificate No. of Application No. 2925111/08, cl. B 24 B 11/02, 1980.