SU831560A1 - Apparatus for working balls - Google Patents

Description

(54) DEVICE FOR HANDLING OF BALLS

t

The invention relates to abrasive machining and can be used when grinding balls.

Devices are known for treating balls placed between two disks, at least one of which has V-shaped grooves 1.

The disadvantage of the device is low productivity, caused by the removal of the allowance at only one point in contact with the abrasive wheel at the time of its slippage.

The purpose of the invention is to increase processing performance.

The goal is achieved by the fact that the profile of the grooves of another disk is formed by concave arcs of non-concentric circles, the radius of which is chosen from the condition

Ha, D,

radius of the ball;

e

Hz

- outer radius of the concentric groove of the disk;

- a positive value depending on the radius of the ball.

FIG. 1 shows a device for treating balls; in fig. 2 shows a section A in FIG. one; in fig. 3 shows a section BB in FIG. I with the right tool in the form of a roller; in fig. 4 shows a section BB in FIG. 1 with a comb tool; in fig. 5 shows a section B-B in FIG. 4 on the right tool in the form of a comb.

The device for grinding balls contains an abrasive wheel 1, a pressure plate 2 attached to the faceplate 3, and

the right tool 4 or 5, which is mounted in spring-loaded springs 6 in the direction of the abrasive disc face 1 of the holder 7 and located in the slot of the faceplate 3 and the pressure disc 2 so that its contour is matched during the editing process

with the abrasive end face 1.

Claims (3)

The right tool 4 or 5 has a contour made in the form of protruding shaped sections 8 and straight plots 9. The number of protruded shaped sections 8 on the right tool 4 or 5 corresponds to the pitch and number of concentric grooves 10 on the abrasive disc 1 and the pressure disk 2, and their location corresponds to and coincides with the location of the grooves on the presser disk 2, so that the profile of the concentric grooves of the presser disk 2 and the abrasive wheel 1 provides four-point contact with the balls 11. The holder 7 is provided with a screw 12 for supplying the right-hand tool 4 or 5 to the end of the abrasive wheel 1. Screw 12 is pivotally connected to the fork of the lever 13 supported on the stop 14. The lever 13 is interconnected with the pusher 15 of the electromagnet 16. The grinding of the balls is carried out between the rotating abrasive wheel 1 and a clamping disk 2, on which pre-cut concentric grooves with a V-shaped profile. At the beginning of processing, the balls 11 are simultaneously ground and the concentric grooves 10 on the abrasive wheel 1 are processed by straightening, gradually deepening with the profiled protruding sections 8 of the right tool 4 or 5 into the body of the circle 1. When the desired depth of the profile of the concentric grooves 10 of the abrasive wheel 1 is reached in which the ball 11 is buried in the groove 10 to a depth of 1 / 4-1 / 3 of its diameter, the specified profile and the depth of the concentric grooves 10 of the abrasive disc 1 during grinding of the balls 11 are supported permanently hydrochloric by continuous or periodic changes. The profile of the concentric grooves of the abrasive wheel in a radial section is formed by concave curves, for example, arcs of a circle with a radius r, greater than the radius of the 11 Gy ball being machined and smaller than the outer radius R of the inner concentric groove 10 of the abrasive disc 1 The lower limit is limited by the arc greater than the radius of the ball, which ensures ball contact with each arc at one point. The upper limit is limited by an arc that is less than the outer radius / sa of the inner concentric groove, which allows the radius of the roller to provide support. constancy of the profile of the grooves of the abrasive wheel and without its correction. A positive value A is chosen in the range of 0.1 ... 5.0 mm depending on the ball radius, which makes it possible to have an increased pressure during processing and consequently high productivity. A water-based fluid is used as a coolant, which is fed to the grinding zone by means of a pump 17 via nozzle line 18. Editing the grooves 10 of the abrasive wheel 1 is performed by rolling with roller 4 or scraping with a comb 5 along the end of abrasive wheel 1 continuously or periodically. To periodically edit the concentric grooves 10 of the abrasive wheel 1, an electromagnet 16 is used. When the electromagnet 16 is turned on, the pusher 15 acts on the lever 13, which stops the right tool away from the concentric grooves 10 of the abrasive wheel 1 through the stop 14. into the concentric grooves of the pressure disc 2. The removal of the balls 11 from the concentric grooves 10 of the abrasive disc 1 is carried out by a removable plate 21, which directs the balls 11 along the tray 22 to the loading device (in the drawing not shown). The proposed device provides the following advantages in comparison with the known ones: 1. Due to the dressing of the grooves of an abrasive wheel (profile with concave arcs), providing an additional second point of contact of the balls with the abrasive wheel in the working area during grinding, the balls slip relative to the abrasive wheel and, consequently, the removal of metal increases and the grinding efficiency of the balls increases. 2. Due to the difference in speeds of contact points on the inner and outer sections of the profile of the concentric grooves of the abrasive wheel, the effect of spinning balls in the grinding process increases, which increases the accuracy of their processing; 3. By opening the abrasive grains on the abrasive wheel, by correcting the profile of the grooves with the profile right-handed tool, it is possible to use a water-based coolant in the grinding process, which improves grinding conditions. Apparatus of the invention for processing balls placed in the grooves between two disks, at least one of which has V-shaped grooves, characterized in that, in order to increase processing performance, the profile of the grooves of the other disk is formed by concave arcs of nonconcentric circles, radius which is chosen from the condition Hz-L A g R-D, where f is the radius of the ball being processed; R is the outer radius of the inner concentric disk groove; L is a positive value, depending on the radius of the ball. Sources of information taken into account during the examination 1. Machine model MSh-ZZM. Vitebsk Machine-Tool Plant them. S.M. Kirov, 1963. .2 B-6 FIG. 3 6-B /ABOUT (rigging sh.